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Ph Tester Pen


 - VIVOSUN PH Meter Digital PH Tester Pen for Water
VIVOSUN PH Meter Digital PH Tester Pen for Water

VIVOSUN Digital pH Meter Tester Pen helps to measure acidity or alkalinity easily and accurately. How to use? Step 1: Remove the protective cap Step 2: Clean the electrode in distilled water and dry it Step 3: Turn the meter on by pressing the ON/OFF key Step 4: Immerse the pH meter electrode in the solution to be tested Step 5: Stir gently and wait for the display stabilizes Step 6: After finished, clean the electrode in distilled water and turn the meter off by pressing the ON/OFF key Tip 1. Don't touch the electrode by hard tools or fingers. Always replace the protective cap to keep electrode from drying out. 2. Clean the electrode every time before and after using. 3. When the meter cannot be turned on or the display fades, open the battery case and replace battery (pay attention to the polarity), then need to recalibrate the meter. Specifications Range:0.00-14.00 pH Resolution: 0.01 pH Accuracy: 0.01 pH Batteries: 2 X 1.5V Environment: 0℃-80℃ (32℉-176℉) Dimensions: 15.5 x 2.9 x 1.6 cm Weight: 50g

  • Color: yellow
  • Brand: VIVOSUN
  • ASIN: B01M5IASHD
  • UPC: 714119465581
 - Apera Instruments AI311 PH60 Premium Waterproof pH Pocket Tester, Replaceable Probe, ±0.01 pH Accuracy, -2.00-16.00 pH Range
Apera Instruments AI311 PH60 Premium Waterproof pH Pocket Tester, Replaceable Probe, ±0.01 pH Accuracy, -2.00-16.00 pH Range

The Apera Instruments PH60 Premium Pocket pH Tester is designed for reliable and easy pH monitoring for all kinds of regular water solutions, such as in hydroponics, aquaculture, pools& spas, water treatment, cooling towers, environmental monitoring, beverage making, etc. The meter comes with a replaceable glass bulb probe (PH60-E) for liquid's pH testing. It is also compatible with 3 other pH probes and an ORP probe (sold seperately) for different applications such as solid samples and surface test.The meter is CE certified and comes with a 2-YEAR Warranty (6 months for the probe).NOTES: The instrument will NOT give accurate or stable readings for distilled or deionized water's pH testing. To measure distilled or deionized water’s pH, users need to use a specialized pH meter like Apera SX811-PW. Do NOT store the probe in distilled water or deionized water because they will cause damage to the pH probe. Only use distilled or deionized water for rinsing the pH probe.

  • Brand: Apera Instruments, LLC
  • ASIN: B01ENFOIQE
  • UPC: 858718006049
 - PH Meter with Automatic Calibration - 7Pros High Accuracy Pen Type Water Quality Tester, 6 pH Buffer Powder Packets, Best Tool for Testing PH of Fish Tank, Pool, Pond, Kombucha, Wine, Drinking Water
PH Meter with Automatic Calibration - 7Pros High Accuracy Pen Type Water Quality Tester, 6 pH Buffer Powder Packets, Best Tool for Testing PH of Fish Tank, Pool, Pond, Kombucha, Wine, Drinking Water

This 7Pros PH meter is the perfect device for determining the acidity or alkalinity of liquids. Take the worry out of pH testing in the field, and meet your alkalinity testing needs outside the laboratory. 7Pros portable pH meter features a variety of advantages to handle testing indoor or outdoor in difficult environments. Our small digital device offers one-handed operation and easy portability for your remote applications. It is an ideal analyzer for the pH value of aquariums, fishing industry, swimming pools, school laboratory, electroplating liquid, photograph flushing fluid, well water, deep phreatic water, aquaculture, food processing & beverage etc. Now you can be free of messy paper strips and chemicals when testing your pH. The SevenPros Digital pH Meter gives you one-touch accurate pH readings for any application, simply remove the protective cap and immerse the electrode in the solution to be measured. The meter is lightweight and will fit in your pocket, or you can use the handy clip on the back of the meter to attach it to your clothing. Specifications: Measure Range: 0.00-14.00 pH Resolution: 0.01 pH Accuracy: ±0.05 pH Operating temperature: 0-60℃/ 140℉ Button battery: 2X 1.5V LR44 (included) Product dimensions: 15x3x1.8cm/6x1.2x0.7 inch Net weight: 50g/ 1.76 ...

  • Brand: 7Pros
  • ASIN: B07NYZBYD3
 - PH Meter ORYCOOL 0.01 Resolution Digital PH Tester Pen 0.00-14.00 PH Range with Automatic Calibration Function for Drinking Water Swimming Pools Spas Aquarium Hydroponics
PH Meter ORYCOOL 0.01 Resolution Digital PH Tester Pen 0.00-14.00 PH Range with Automatic Calibration Function for Drinking Water Swimming Pools Spas Aquarium Hydroponics

Calibration Instructions If you know that you will be testing for acidity, you will usethe 6.86 solution and the 4.0 solution. If you know that you will be testing for alkalinity you will usethe 6.86 solution and the 9.18 solution. If unsure, it is recommended using the 4.0 solution as thesecond point of calibration.Step 1: Mix each of the two chosen buffer powders in 250ml (approximately one cup) of distilled or deionized water. Step 2: Insert the tip of the pH meter into the 6.86 solutionand push the 'cal' button in and hold in for 3 seconds beforereleasing. (This initiates the calibration procedure.)The meter will begin flashing 6.86.Gently swirl until the reading stabilizes. Step 3: If Using the 4.0 solution : Insert tip of meter into the 4.0 solution. Press and hold the 'cal' button for 3 seconds before releasing, the meter starts to flash 6.86), and then immediately press and release again (without holding it infor 3 seconds) and the meter will begin to flash 4.0. Gentlyswirl until the reading stabilizes. Alternate Step 3: If using the 9.18 solution as the secondpoint of calibration: Insert the tip of the pH meter into the 9.18 solution andpush and hold in the 'cal' button for 3 seconds beforereleasing (the meter will start to flash 6.86) and then immediately press and rele...

  • Brand: ORYCOOL
  • ASIN: B07F8S8N3H
 - Dr.meter PH100-V 0.01 Resolution High Accuracy Pocket Size pH Meter with ATC, 0-14pH Measurement Range
Dr.meter PH100-V 0.01 Resolution High Accuracy Pocket Size pH Meter with ATC, 0-14pH Measurement Range

Dr.meter - Ultimate Measure for Accuracy The Dr.Meter pH-100 is a handheld, accurate pH meter that measures pH value of water or solution. It has been widely used in the realm of hydroponics, education, water treatment, and swimming pools. This meter has ATC(automatic temperature compensation) for accurate readings in fluctuating temperatures. Specifications: Measuring range: 0-14 pH Resolution: 0.01 Batteries: 4x 1.5V LR44 button cell (AG13) Working temperature: 0-50°C (32-122°F) Weight: 88gPackage includes:1 x pH Meter 1 x Carrying case 6 x Calibration packet 1 x User manual 1 x Warranty card 4 x button cell 1 x Warranty card Warranty: 30 Days Money Back; 12 Month Free Exchange

  • Color: PH100 PH Meter
  • Brand: Dr.meter
  • ASIN: B00ST3VTQ4
 - Lineco pH Testing Pen for Paper or Paperboard Products.
Lineco pH Testing Pen for Paper or Paperboard Products.

An easy, convenient way to distinguish between safe alkaline paper and board, and unsafe acidic paper and board. The chlorophenol red indicator solution turns a definite purple color on any paper with a pH of 6.5 or higher.

  • Color: Multi
  • Brand: Lineco
  • ASIN: B000KNJCSS
  • UPC: 099295003506
 - SX610 Waterproof pH Pen Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Suitable for Test Tube Testing, Replaceable Probe
SX610 Waterproof pH Pen Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Suitable for Test Tube Testing, Replaceable Probe

The Apera Instruments SX610 pH Pen Tester is featured with reliable measuring performance with a single-button operation in a slim body. A cost-effective choice for your regular pH testing, including hydroponics, aquaculture, water treatment, pools& spas, brewing, and so on. The pH probe is replaceable and suitable for test tube measuring, which is especially suitable for educational use. Easy Auto Calibration (1 point: 7.00) with buffer recognition and 0 to 60˚C Auto Temperature Compensation (ATC), ±0.1 pH/1.0˚C accuracy with 0 to 14.0 pH measuring range. Intelligent functions: switch from ˚F to ˚C, automatic power-off, low battery alarm, pH probe invalidation reminder (remind you to replace the probe for better performance). The meter comes with a complete kit of premixed calibration solutions (7.00), storage solutions (3M KCL), CR2032 lithium batteries all in a portable carrying case. IP57 waterproof and dustproof floats on water, so you don’t have to worry if it falls into the water by accident. The meter is CE certified and comes with a 2-YEAR Warranty (6 months for the probe). The company designs and manufactures scientific analytical instruments like meters and sensors for pH, conductivity, turbidity, and dissolved oxygen for over 25 years, and meets ISO 9001:2008 S...

  • Brand: Apera Instruments, LLC
  • ASIN: B01ESYG6B0
  • UPC: 858718006254
 - Apera Instruments AI209 PH20 Value Waterproof pH Pocket Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Complete Kit
Apera Instruments AI209 PH20 Value Waterproof pH Pocket Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Complete Kit

"The PH20 Value pH Tester is designed for all kinds of regular pH test applications, including hydroponics, pools and spas, water treatment, aquariums, aquaculture, beer brewing, winemaking, cooling towers, etc. Up to 3 points of auto. calibration and 0 to 50˚C Auto temperature compensation (ATC), ±0.1 pH Accuracy with 0 to 14.0 pH measuring range; auto. recognition and auto. indication of stable readings saves you the trouble of guessing when to manually hold measurement. The PH20 meter comes in a rugged case with pre-mixed 1oz bottles of pH 4 and pH 7 calibration solutions (good for 10-15 times of calibration). With a clear large screen, it supports dual display of Temp./pH value and indicators of completed calibrations (where L/M/H indicate 3 points of calibrations) and stable readings (with a smiley face). Smart self-diagnosis, warning of out-of-range measurement and incorrect calibrations. IP67 waterproof and dustproof. Up to 2000 hours' continuous operation powered by AAA batteries (with low power warning and Auto power off in 8 min if no operation). The meter is CE certified and comes with a 2-YEAR Warranty (6 months for the probe).The company develops scientific analytical instruments like meters and sensors for pH, conductivity, turbidity, and dissolved oxygen since 19...

  • Brand: Apera Instruments, LLC
  • ASIN: B01ENFOHN8
  • UPC: 858718006339
 - Bluelab PENPH pH Pen for Plant Germination
Bluelab PENPH pH Pen for Plant Germination

The ultimate handy solution for measuring pH! Plants get their nutrition from minerals but they can only get all the right minerals they need if certain conditions are right. A key factor that affects food uptake is whether your solution is acid or alkaline. We measure this in pH. The Bluelab pH Pen is the latest innovation for hand held meters. It provides a compact quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. Teamed with our Bluelab EC Pen or Bluelab ppm Pen, you have a handy, convenient and accurate system for ensuring optimum plant growth and health. Now, isn't that handy? Features - Measures pH and temperature - Selectable units for ˚C & ˚F - Backlit LCD display - Double junction probe (not replaceable) - Successful pH calibration indicator - Hold reading function - Low battery indicator - Fully waterproof - Auto off function - Automatic temperature compensation.

  • Brand: Bluelab
  • ASIN: B005POOJHG
 - KETOTEK Digital PH Meter, PH Meter with ATC, Water PH Test Meter with 0.00-16.00ph Measure Range for Drinking Water, Hydroponics, Aquariums, Swimming Pools. High Accuracy 0.01 PH Pen Tester
KETOTEK Digital PH Meter, PH Meter with ATC, Water PH Test Meter with 0.00-16.00ph Measure Range for Drinking Water, Hydroponics, Aquariums, Swimming Pools. High Accuracy 0.01 PH Pen Tester

Specification:Measure range: 0.00- 16.00PHResolution: 0.01PHAccuracy: 0.01 PHPower Supply: 2*1.5V (LR44 Button cell) (Included)Operating Temperature: 0°C - 60°C / 32°F - 140°FDimension: 155mm* 31mm * 18mm / 6.1" × 1.2" × 0.7"Weight: 50g / 1.76ozCalibration tips:a. Dissolve PH buffer powder in 250ml of distilled water.b. Turn on PH meter and clean the electrode in distilled water, then immerse the electrode in the PH standard solution.c. Press " CAL" button, wait until the reading is the same as the PH value of buffer powder and steady.d. Clean electrode with distilled water and dry it.Packaging:- 1×Digital PH Meter- 1×Carrying Case- 1×User Manual- 2×PH buffer powderREMINDER:- Pls make the connecting shrapnel of the battery case orient towards the side of LCD display, when you install battery case into the PH meter, to avoid battery case that are got stuck in PH tester.- Pls recalibrate the PH tester after open the battery case or replace the battery.- Pls clean the electrode with distilled water before or after use it.- Pls don't drop distilled water in protection cap to maintain the agile grass probe of the PH meter, pls use storage solution or standard solution if needed.

  • Color: Yellow
  • Brand: KETOTEK
  • ASIN: B07RRTZ8LF
 - Bluelab PENPH  pH Pen, Ultimate Handy Solution for Measuring pH and Temperature
Bluelab PENPH pH Pen, Ultimate Handy Solution for Measuring pH and Temperature

Plants get their nutrient from minerals but they can only get all the right minerals they need if certain conditions are right. Think of nutrients like a lock. pH is the key. A key factor that affects food uptake is whether your solution is acid or alkaline. We measure this in ph. The Blue lab pH Pen also measures the temperature of the solution, as root health is vital to the success of a crop. Temperature affects the growth rate and structure of a plant so a solution temperature of 65 - 72ËšF is recommended. The Blue lab pH Pen is the latest innovation for handheld meters. It provides a compact quick and handy way to manage the success of your crop to ensure maximum uptake of nutrients. Teamed with our Blue lab ppm Pen, you have a handy, convenient and accurate system for ensuring optimum plant growth and health. Now isn't that Handy!

  • Brand: Bluelab
  • ASIN: B008R7OWJS
 - Membrane Solutions Digital PH Meter for Water 0.1 PH High Accuracy Water Quality Tester with 0-14 PH Measurement Range, with ATC, Auto Calibration, for Household Drinking, Pool and Aquarium
Membrane Solutions Digital PH Meter for Water 0.1 PH High Accuracy Water Quality Tester with 0-14 PH Measurement Range, with ATC, Auto Calibration, for Household Drinking, Pool and Aquarium

Why do we need a PH test pen? Tap water and drinking water are indispensable sources of water in our lives. The pH of water has a great impact on human health. So we need to understand the pH of the drinking water .

  • Brand: Membrane Solutions
  • ASIN: B07T94C5GG
  • UPC: 778695795685
 - Digital Ph Meter Tester 0.01 PH Accuracy Water Quality Tester with ATC 0-14 Measurement Range with Plastic Box for House Water,Hydroponics,Aquariums,Pool,6 pH Buffer Packets calibration(with battery)
Digital Ph Meter Tester 0.01 PH Accuracy Water Quality Tester with ATC 0-14 Measurement Range with Plastic Box for House Water,Hydroponics,Aquariums,Pool,6 pH Buffer Packets calibration(with battery)

Attention: 1.The button battery in the PH meter needs to be replaced regularly 2.After use, please turn off the power on the PH meter, otherwise it will always consume power. Digital PH Meter Water Tester: This PH meter is affordable and useful for those who need a PH tester for household and laboratory use. It's not only ideal for household or laboratory use, also suitable for testing PH balance of drinking water, pool, aquarium, food Project, RO system, Spa, or hydroponics. Specifications: ■ Measuring range: 0.00-14.00 pH ■ Resolution: 0.01 pH ■ Accuracy: 0.01 pH ■ Batteries: 2X 1.5V LR44 (included) ■ Automatic temperature compensation: 0-50℃(32-122℉) ■ Dimensions: 15.5x2.9x1.6 cm/6.1x1.1x0.6 inch ■ Net Weight: 50g/1.76oz Warm tips: ▼ STEP 1: Turn open pH meter, Clean the electrode in distill water ▼ STEP 2: Immerse the electrode in pH 6.86 standard buffer solution ▼ STEP 3: Press the "CAL" button. Wait until the display digital is 6.86pH and steady ▼ STEP 4: Clean the electrode in distill water and dry it, immerse the electrode in pH 4.00 standard buffer solution ▼ STEP 5: Press the "CAL" button. Wait until the display digital is 4.00pH. Then complete pH 4.00 calibration ▼ STEP 6: The pH 9.18 calibration is the same with step1~5. Package I...

  • Color: Yellow
  • Brand: Xrime
  • ASIN: B07DGKSPDJ
 - Pancellent Water Quality Test Meter TDS PH 2 in 1 Set 0-9990 PPM Measurement Range 1 PPM Resolution 2% Readout Accuracy (Yellow)
Pancellent Water Quality Test Meter TDS PH 2 in 1 Set 0-9990 PPM Measurement Range 1 PPM Resolution 2% Readout Accuracy (Yellow)

Little Money to Know Water Quality The Pancellent TDS PH Meter set is a professional level water test meter. Application: pure water production and drinking, tap water, well water, sea water, fish tank water, swimming pool water, amniotic fluid early break, soil, aquaculture, food processing, saliva, enzyme, chemical experiment, ionized water, PH value of human urine and so on. PH Meter Specifications: Measure Range : 0.00 - 14.00 pH Resolution : 0.01 pH Accuracy : ± 0.01 pH Automatic Temperature Compensation : 0 - 60 ℃ / 32 - 140 ℉ Calibration : Two Points Automatic Calibration Button Button battery: 2 x 1.5V LR44(keep using more than 500 hours) Dimension:155mm*31mm*18mm Weight:50g TDS Meter Specifications: Lock function - makes it easy to read and record, press HOLD button then remove from test solution. 5 minute Auto Shut Off feature, so battery won't run down. Measurement Range: TDS: 0 - 9990 ppm (parts per million) Accuracy: ± 2% Automatic temperature compensation: can automatically change the value of the value of 25 ℃. Working temperature: 0 ~ 50 ℃ Ambient relative humidity:

  • Color: Yellow
  • Brand: Pancellent
  • ASIN: B078NJR692
 - Soil Moisture Meter,3 in 1 Soil Test Kit,Soil PH Test kit Gardening for Moisture,Light & PH Testing,Digital Indoor/Outdoor Soil Tester/Analyzer/Detector Reader with Probe for Home and Garden,Farm,Lawn
Soil Moisture Meter,3 in 1 Soil Test Kit,Soil PH Test kit Gardening for Moisture,Light & PH Testing,Digital Indoor/Outdoor Soil Tester/Analyzer/Detector Reader with Probe for Home and Garden,Farm,Lawn

Promotes Healthy Plants: 3-in-1 Soil Meter help you know your soil more clear and care your plants more rational. Let you know when to water. Dry and needs water or wet and could use a day to dry out. You will never over/under water your plants again Help you to control Ph level in soil, acidic or alkaline is suitable for your plants You will never plant your lovely flowers into high-acid or Extreme alkalinity soil Help you to determine if plant getting adequate light Easy To Use: Step 1: Switch moisture/pH/light position Step 2: Inset the probe of the meter to the plants' roots about 4-6 inches Step 3: Adjust the position of the probe until the pointer on the dial swing slightly Step 4: After 10 minutes, Note moisture/pH/light level in the dial Step 5: Remove probe from soil and wipe clean after each use Tips: 1. without touching the stone, don't too hard, easy to damage the probe 2. After using, need to clean and wipe the probe (can't test the water) 3. Don't inserted in the soil for a long time for using 4. Design for testing soil, don't use it to test pure water or too rigid ground Specifications pH Range: 3.5-8 Ph (3.5-6.5 ACID, 7 NOR, 7-8 ALKALI) Moisture Range: 1-10 (1-3 DRY, 4-7 NOR, 8-10 WET) Relative Light: 0-2000 lux (0-200 LOW, 200-500LOW+, 500-1000 NOR 1000-2...

  • Color: Green
  • Brand: SSAWcasa
  • ASIN: B01E3G5ONE
  • UPC: 190149076032
 - Water Quality Test Meter Pancellent TDS PH EC Temperature 4 in 1 Set
Water Quality Test Meter Pancellent TDS PH EC Temperature 4 in 1 Set

Little Money to Know Water Quality The Pancellent TDS EC PH Meter set is a professional level water test meter. Application: pure water production and drinking, tap water, well water, sea water, fish tank water, swimming pool water, amniotic fluid early break, soil, aquaculture, food processing, saliva, enzyme, chemical experiment, ionized water, PH value of human urine and so on. PH Meter Specifications: Measure Range : 0.00 - 14.00 pH Resolution : 0.01 pH Accuracy : ± 0.01 pH Automatic Temperature Compensation : 0 - 60 ℃ / 32 - 140 ℉ Calibration : Two Points Automatic Calibration Button Button battery: 2 x 1.5V LR44(keep using more than 500 hours) Dimension:155mm*31mm*18mm Weight:50g TDS EC Temperature Meter Specifications: Lock function - makes it easy to read and record, press HOLD button then remove from test solution. 4 Display modes: press SHIFT button: TDS - ppm & °C, EC - µs/cm & °C, TDS - ppm & °F, EC - µs/cm & °F. 5 minute Auto Shut Off feature, so battery won't run down. Measurement Range: Conductivity: 0 - 9990 µs/cm TDS: 0 - 9990 ppm (parts per million) Degrees Celsius: 0.1 - 80.0°C, Fahrenheit: 32.0 - 176.0°F Accuracy: ± 2% Net weight: 55g Size: 154 x 30 x 14 mm Tips:TDS = Total Dissolved Solids, which is any salt, metal or mineral in the wa...

  • Color: Yellow
  • Brand: Pancellent
  • ASIN: B06XCMNFVQ
  • UPC: 702877259535
 - JTD High Accuracy Pocket Size Handheld pH Meter Pen Tester (Yellow) 0-14pH Measurement Range, Auto Temperature Compensation
JTD High Accuracy Pocket Size Handheld pH Meter Pen Tester (Yellow) 0-14pH Measurement Range, Auto Temperature Compensation

Get accurate pH measurement easily The JTD pH-1 meter is a perfect device for you to test the acidity or alkalinity of liquids. With resolution of 0.01pH and a 0.05pH range of error, you may get higher accuracy than other pH meters. Ideal for many household or laboratory applications With a standard measuring range of 0-14 pH, the pH meter 2011 is great for a wide range of tasks. An affordable way to test your swimming pool, aquarium, tap water, or appliance water source, you can finally know whether the water you are drinking or using is acceptable for the application. It is also an excellent choice for basic measurements in a laboratory setting, making it an ideal choice for students taking chemistry or biology classes. JTD customers have used the pH-2011 meter in a huge variety of applications including: home brewing, soil testing, laboratory testing, aquarium maintenance, liquid solution testing, potable water testing and much more! Specifications: Measuring range: 0-14 pH Resolution: 0.01 pH Accuracy: 0.05 pH Batteries: 4x 1.5V LR44 button cell (AG13) Automatic temperature compensation: 0-50°C (32-122°F) Dimensions: 5.94x1.30x0.79in /151x33x20mm Weight: 1.87oz /53g Package Includes: 1 x JTD pH Meter 2011 4 x 1.5V LR44 button cells 1 x Adjustment screwdriver...

  • Color: Yellow
  • Brand: JTD
  • ASIN: B016R3Q0NE
  • UPC: 766150277890
 - BFVV Digital PH Meter PH Tester Pen with 0-14 PH Measurement Range for Drinking Water Swimming Pools Spas Aquarium Hydroponics
BFVV Digital PH Meter PH Tester Pen with 0-14 PH Measurement Range for Drinking Water Swimming Pools Spas Aquarium Hydroponics

Calibration Instructions If you know that you will be testing for acidity, you will usethe 6.86 solution and the 4.0 solution. If you know that you will be testing for alkalinity you will usethe 6.86 solution and the 9.18 solution. If unsure, it is recommended using the 4.0 solution as thesecond point of calibration. Step 1: Mix each of the two chosen buffer powders in 250ml (approximately one cup) of distilled or deionized water. Step 2: Insert the tip of the pH meter into the 6.86 solutionand push the 'cal' button in and hold in for 3 seconds beforereleasing. (This initiates the calibration procedure.)The meter will begin flashing 6.86.Gently swirl until the reading stabilizes. Step 3: If Using the 4.0 solution : Insert tip of meter into the 4.0 solution. Press and hold the 'cal' button for 3 seconds before releasing, the meter starts to flash 6.86), and then immediately press and release again (without holding it infor 3 seconds) and the meter will begin to flash 4.0. Gentlyswirl until the reading stabilizes. Alternate Step 4: If using the 9.18 solution as the secondpoint of calibration: Insert the tip of the pH meter into the 9.18 solution andpush and hold in the 'cal' button for 3 seconds before releasing (the meter will start to flash 6.86) and then immediately press and r...

  • Brand: BFVV
  • ASIN: B07PMJ4PMB

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