From the product description, check product page for current description, price and availability:

• 【High Accuracy & More Sensitive Bulb Design PH Meter】: The core of the ph tester digital is the electrode, and the core of the ph tester electrode is the bulb. The ppm meter bulb made by blue effect technology is blown at a high temperature of 1000 degrees Celsius. This can fully respond to the H+ ions in the solution.The bulb glass film uses a low-impedance glass sensitive film (≤25MQ), and the reaction speed of the TDS PH meter is also greatly improved, reaching a true level of 0.01 !
• 【PPM Meter with One Key Lock Value Function 】: When the measured value is stable, just press the HOLD/TEMP key to lock the measured value and take it out for viewing, which is really simple. (Before press “HOLD/TEMP” key, the number of pH is fluctuate slightly which is normal.)
• 【Easy to Use Lab PH Meters with Backlit LCD Design 】: Just remove the ph pen protective cap and immerse the ph water tester electrode in the solution and press the button to be measured. Don’t worry about seeing the displayed value when there is insufficient light. Water ph tester features a green backlit LCD to help you see the measurement clearly in any situation.
• 【TDS Meter with Automatic Temperature Compensation】: Temperature can affect reading levels, our water meterr’s automatic temperature compensation can ensure that you’re getting the best possible reading. Unlike other ph meter for water hydroponics that only have a range of 0 °C-50 °C, ours ph meter for water hydroponics has a even better range of 0 °C-60 °C (32 °F-140 °F) , so you can test with confidence in any environment.
• 【PH Tester with Wide Application】: Ideal for household and laboratory pH testing applications, including drinking water, swimming pool, pond, beer brewing, kombucha, aquariums, hydroponics, laboratory, food processing etc. (Range: 0.01 – 14.00pH; Resolution: 0.01pH; Accuracy:±0.05pH; TDS range: 1-9990ppm; Resolution:1ppm; 0.1ppt; Accuracy: ±2% F.S. ), reliable and quick readings.

From the product description, check product page for current description, price and availability:

• MEASURE pH LEVEL Our premium grade litmus pH test strips are ideal for testing the acidity in a wide range of products: water, human and pet urine, saliva, soil, soap, skincare, and more. These are laboratory and diagnostic grade pH test strips.
• FAST RESULTS Take one strip from the pack and dip it into your solution. The strip color will change almost instantly. Quickly match this color against the color chart on the inside of the pack to obtain the pH. The number next to the matching color is your pH.
• PROPER STORAGE To ensure accuracy, store these pH strips in their original packaging and in a cool, dry place away from sunlight.
• pH FULL RANGE AND INTERVALS Our pH 4.5 – 8 test strips are offered in increments by 1 pH unit. The pH color chart intervals cover: 4.5 (acidic), 4.8, 5.1, 5.4, 5.7, 6, 6.3, 6.6, 6.8, 7 (neutral), 7.3, 7.5, 7.8, 8 (alkaline).

From the product description, check product page for current description, price and availability:

pHydrion Paper Strips. Range: 1 to 12 . 100 strips per Vial. Model 165 . 1 vial. Economical test strips for general use. Note these strips are for use not requiring close accuracy. They also are not meant to test any type of water. Micro Essential has specific test paper to test water. Item number LI5900 or LI5000 are for water testing.

From the product description, check product page for current description, price and availability:

• 【High Accuracy & More Sensitive Bulb Design PH Meter】: The core of the ph tester digital is the electrode, and the core of the ph tester electrode is the bulb. The ppm meter bulb made by blue effect technology is blown at a high temperature of 1000 degrees Celsius. This can fully respond to the H+ ions in the solution.The bulb glass film uses a low-impedance glass sensitive film (≤25MQ), and the reaction speed of the TDS PH meter is also greatly improved, reaching a true level of 0.01 !
• 【PPM Meter with One Key Lock Value Function 】: When the measured value is stable, just press the HOLD/TEMP key to lock the measured value and take it out for viewing, which is really simple. (Before press “HOLD/TEMP” key, the number of pH is fluctuate slightly which is normal.)
• 【Easy to Use Lab PH Meters with Backlit LCD Design 】: Just remove the ph pen protective cap and immerse the ph water tester electrode in the solution and press the button to be measured. Don’t worry about seeing the displayed value when there is insufficient light. Water ph tester features a green backlit LCD to help you see the measurement clearly in any situation.
• 【TDS Meter with Automatic Temperature Compensation】: Temperature can affect reading levels, our water meterr’s automatic temperature compensation can ensure that you’re getting the best possible reading. Unlike other ph meter for water hydroponics that only have a range of 0 °C-50 °C, ours ph meter for water hydroponics has a even better range of 0 °C-60 °C (32 °F-140 °F) , so you can test with confidence in any environment.
• 【PH Tester with Wide Application】: Ideal for household and laboratory pH testing applications, including drinking water, swimming pool, pond, beer brewing, kombucha, aquariums, hydroponics, laboratory, food processing etc. (Range: 0.01 – 14.00pH; Resolution: 0.01pH; Accuracy:±0.05pH; TDS range: 1-9990ppm; Resolution:1ppm; 0.1ppt; Accuracy: ±2% F.S. ), reliable and quick readings.

From the product description, check product page for current description, price and availability:

• 【High Accuracy & More Sensitive Bulb Design PH Meter】: The core of the ph tester digital is the electrode, and the core of the ph tester electrode is the bulb. The ppm meter bulb made by blue effect technology is blown at a high temperature of 1000 degrees Celsius. This can fully respond to the H+ ions in the solution.The bulb glass film uses a low-impedance glass sensitive film (≤25MQ), and the reaction speed of the TDS PH meter is also greatly improved, reaching a true level of 0.01 !
• 【PPM Meter with One Key Lock Value Function 】: When the measured value is stable, just press the HOLD/TEMP key to lock the measured value and take it out for viewing, which is really simple. (Before press “HOLD/TEMP” key, the number of pH is fluctuate slightly which is normal.)
• 【Easy to Use Lab PH Meters with Backlit LCD Design 】: Just remove the ph pen protective cap and immerse the ph water tester electrode in the solution and press the button to be measured. Don’t worry about seeing the displayed value when there is insufficient light. Water ph tester features a green backlit LCD to help you see the measurement clearly in any situation.
• 【TDS Meter with Automatic Temperature Compensation】: Temperature can affect reading levels, our water meterr’s automatic temperature compensation can ensure that you’re getting the best possible reading. Unlike other ph meter for water hydroponics that only have a range of 0 °C-50 °C, ours ph meter for water hydroponics has a even better range of 0 °C-60 °C (32 °F-140 °F) , so you can test with confidence in any environment.
• 【PH Tester with Wide Application】: Ideal for household and laboratory pH testing applications, including drinking water, swimming pool, pond, beer brewing, kombucha, aquariums, hydroponics, laboratory, food processing etc. (Range: 0.01 – 14.00pH; Resolution: 0.01pH; Accuracy:±0.05pH; TDS range: 1-9990ppm; Resolution:1ppm; 0.1ppt; Accuracy: ±2% F.S. ), reliable and quick readings.

From the product description, check product page for current description, price and availability:

• MEASURE pH LEVEL Our premium grade litmus pH test strips are ideal for testing the acidity in a wide range of products: water, human and pet urine, saliva, soil, soap, skincare, and more. These are laboratory and diagnostic grade pH test strips.
• FAST RESULTS Take one strip from the pack and dip it into your solution. The strip color will change almost instantly. Quickly match this color against the color chart on the inside of the pack to obtain the pH. The number next to the matching color is your pH.
• PROPER STORAGE To ensure accuracy, store these pH strips in their original packaging and in a cool, dry place away from sunlight.
• pH FULL RANGE AND INTERVALS Our pH 4.5 – 8 test strips are offered in increments by 1 pH unit. The pH color chart intervals cover: 4.5 (acidic), 4.8, 5.1, 5.4, 5.7, 6, 6.3, 6.6, 6.8, 7 (neutral), 7.3, 7.5, 7.8, 8 (alkaline).

From the product description, check product page for current description, price and availability:

pHydrion Paper Strips. Range: 1 to 12 . 100 strips per Vial. Model 165 . 1 vial. Economical test strips for general use. Note these strips are for use not requiring close accuracy. They also are not meant to test any type of water. Micro Essential has specific test paper to test water. Item number LI5900 or LI5000 are for water testing.

From the product description, check product page for current description, price and availability:

• MEASURE pH LEVEL Our premium grade litmus pH test strips are ideal for testing the acidity in a wide range of products: water, human and pet urine, saliva, soil, soap, skincare, and more. These are laboratory and diagnostic grade pH test strips.
• FAST RESULTS Take one strip from the pack and dip it into your solution. The strip color will change almost instantly. Quickly match this color against the color chart on the inside of the pack to obtain the pH. The number next to the matching color is your pH.
• PROPER STORAGE To ensure accuracy, store these pH strips in their original packaging and in a cool, dry place away from sunlight.
• pH FULL RANGE AND INTERVALS Our pH 4.5 – 8 test strips are offered in increments by 1 pH unit. The pH color chart intervals cover: 4.5 (acidic), 4.8, 5.1, 5.4, 5.7, 6, 6.3, 6.6, 6.8, 7 (neutral), 7.3, 7.5, 7.8, 8 (alkaline).

From the product description, check product page for current description, price and availability:

• 【 HIGH ACCURACY 】 : ph tester has a sensitive electrode sensor ,simply press “ON”, It only takes a few seconds for your result to appear on screen.read accurate pH levels. The included detailed manual will show you how to get the best accurate and stable reading.
• 【AUTO CALIBRATION 】: The Ph Meter Has an Auto Temprature Compensation Feature That Adjusts to Water Temperatures and Water Quality to Give Ph Readings Almost Instantly. As Well, You Can Calibrate the Tester with One Touch Button Using Buffer Powder.
• 【WIDE USE 】: Ideal for Household or Laboratory Use, Suitable for Testing Ph Balance of Drinking Water, Pool, Aquarium, Ro System, Spa, or Hydroponics; Appropriate for Wide Range of Applications.
• 【99% of ACCURATENESS 】 :Up to 99% accurateness . The test value might vary with atmospheric gases and temperature. Note: Pls don’t add acid or alkaline drinks to adjust, it can’t make any effect by doing this.
• 【3 calibration packages】Let you no longer worry about whether the ph meter is accurate, the 3 calibration packages we give can help you test whether our ph meter is accurate.

From the product description, check product page for current description, price and availability:

• High Accuracy- Unlike other competitors, Esee pH test strips offer 0.5 accuracy rather than 1 accuracy, maximum 4 colors panel that give you the most accurate results.
• Good Quality- Each pH strip is made of good quality litmus paper, won’t bleed like normal litmus paper.
• Full Range- pH test paper range from 0-14, pH color chart intervals: 0,0.5,1,1.5,2,2.5,3,3.5,4,4.5,5,5.5,6,6.5,7,7.5,8,8.5,9,9.5,10,10.5,11,11.5,12,12.5,13,13.5,14
• Easy To Match And Read- 4 colors panel as a group to match against the color chart on the pack case, so it can be very clear to read the number and get pH result.
• Usable Anywhere- Suitable for testing pH balance of drinking water, pool, aquarium, RO system, Spa, or hydroponics; Appropriate for wide range of applications.