The Best PH and Thermometers 2025

1. 610B Litmus Test Paper Red (100) Multi-Colored

610B Litmus Test Paper Red (100) PEFX0641 PERFECT

This Package Contains 100 Strips of Red Litmus Paper / Lab Grade Equipment by The Perfect Parts Company. / / FEATURES: Solution color indicators. / Used for testing alkalies. / When dipped into an acidic solution, it stays red. / When dipped into a basic solution, it turns blue. / Designed for all general lab work. / / INCLUDES: Red Litmus Paper (100pc.) / / SPECS: Length: 1-7/8" / kr4/24/01 / ir/jl

2. Hot Water Tester 4pk

Save money and prevent scalding when hot water heater is set at the proper temperature. Just place thermometer under the hot water faucet and read temperature to ensure correct setting.

Save money and prevent scalding when hot water heater is set at the proper temperature. Just place thermometer under the hot water faucet and read temperature to ensure correct setting.

3. Extech Exstik Ph Meter

The PH100 waterproof ExStik® pH meter provides fast and easy on-the-spot pH measurements. The flat surface electrode measures pH in liquids, semi-solids, and solids. No more electrode breakage or clogged junctions. The renew indicator tells you when it's time to replace your electrode. The cal alert ensures consistently accurate readings by telling you when you need to recalibrate. A memory feature records and recalls 15 sequentially tagged readings, so you will know how your readings have changed over time. The LCD readout displays pH, temperature and an analog bargraph that shows trends in acidity or alkalinity and indicates when the reading is stable. 1, 2 or 3 point calibration automatically recognizes buffer solutions. Other features include automatic temperature compensation, auto power off, low battery indicator and data hold.

Built-in smart chip offers advanced functions and features to a stick style pH meter not found anywhere else Renew feature that tells you when it’s time to replace your pH electrode Cal feature that tells you when it’s time to recalibrate your meter

4. Quick Dip 5-in-1 Test Strips, Pack of 25

Test your fish's water conditions quickly and with accuracy

Contains 25 Test Strips

5. Quick Dip 5-in-1 & Ammonia Test Strips, Pack of 25 each

Two Quick Dip tests for all six water quality measures in one kit

Contains 25 5-N-1 Tests & 25 Ammonia Test Strips

6. Field Calibratable 45 Degree Read Ph Instrument

Replaceable pH electrode. Data hold. Durable waterproof housing. Auto power off; low battery indicator. Replaceable probe. pH range: 0.00 to 14.00 pH. Accuracy: ±0.05 pH @25 °C. Resolution: 0.01 pH.Dimensions: 5.85" x 1.65" x 1.45". Power: 2 "CR2032" battery. Weight: 2.4 oz.

Food preparation and solution balance- -Features Benefits :- Easy-to-read 45? angle- Automatic calibration at the touch of a button- Simultaneously displays pH and temp- ?F/?C temperature display- Replaceable head- Data hold- Durable waterproof housing- Auto power off; low battery indicator- CE and RoHS approved- Specifications :- Measurement Range: 0 to 14 pH unitsMeasurement Accuracy: ?0-05 pH unitsMeasurement Resolution: 0-01 pH unitsDimensions:5-85 x 1-65 x 1-45 in- (149 x 42 x 37mm)Weight: 2-4 oz- (68g)Power Source: 2 ?CR2023? batteries (included)- Includes :- Soft carrying case- Batteries SKU: GTDPH8690

7. Field Calibratable 45 Degree Read Ph Instrument

Replaceable pH electrode. Data hold. Durable waterproof housing. Auto power off; low battery indicator. Replaceable probe. pH range: 0.00 to 14.00 pH. Accuracy: ±0.05 pH @25 °C. Resolution: 0.01 pH.Dimensions: 5.85" x 1.65" x 1.45". Power: 2 "CR2032" battery. Weight: 2.4 oz.

Food preparation and solution balance- -Features Benefits :- Easy-to-read 45? angle- Automatic calibration at the touch of a button- Simultaneously displays pH and temp- ?F/?C temperature display- Replaceable head- Data hold- Durable waterproof housing- Auto power off; low battery indicator- CE and RoHS approved- Specifications :- Measurement Range: 0 to 14 pH unitsMeasurement Accuracy: ?0-05 pH unitsMeasurement Resolution: 0-01 pH unitsDimensions:5-85 x 1-65 x 1-45 in- (149 x 42 x 37mm)Weight: 2-4 oz- (68g)Power Source: 2 ?CR2023? batteries (included)- Includes :- Soft carrying case- Batteries SKU: GTDPH8690

8. Body Rescue By Raena Morgan Ph Testing Tape, 1 CT

For Use with bodily fluids only. pH Testing Tape tests both saliva and urine.

Body Rescue By Raena Morgan Ph Testing Tape, 1 CT: Brought to you by Body Rescue By Raena Morgan

9. Body Rescue By Raena Morgan Ph Testing Tape, 1 CT

For Use with bodily fluids only. pH Testing Tape tests both saliva and urine.

Body Rescue By Raena Morgan Ph Testing Tape, 1 CT: Brought to you by Body Rescue By Raena Morgan

10. HANNA Instruments HI98311 DiST5 EC-TDS-Temperature Tester

short description is not available

Waterproof and it floats!- High accuracy- Automatic calibration and temperature compensation- HOLD function- BEPS (Battery Error Prevention System)- When the original DiST (Dissolved Solids Tester) was first introduce, conductivity and total dissolved solids measurements became easy and affordable- The DiST's ease of us, in combination with its affordability made it the standard in EC and TDS measurement- HANNA continues the standard in EC and TDS testing with the DiST5- This tester includes features such as: a replaceable graphite electrod, adjustable TDS rati, C or F measuremen, Automatic Temperature Compensation (ATC) with adjustable , battery level indicato, stability indicato, automatic shut-off and automatic calibration- The graphite conductivity electrode provides greater accuracy because it resists contamination by salt deposits in the sample- All of these features are packed in a floatin, waterproof casing- This 3-in-1 tester is unmatched in EC/TDS/ temperature measurements- Order Information:- HI 98311 (DiST 5) is supplied with HI 73311 EC/TDS prob, HI 73128 probe removal too, batteries and instructions- Specfications: Range EC 0 to 3999- TDS 0 to 2000 ppm- Temperature 0-0 to 60-0C / 32 to 140-0F- Resolution EC 1- TDS 1 ppm- Temperature 0-1C / 0-1F- Accuracy EC 2% F-S- TDS 2% F-S- Temperature 0-5C / 1F- Calibration automati, one point at 1413 or 1382 mg/L (ppm)- TDS Conversion Factor adjustable from 0-45 to 1-00- Temperature Compensation automati, with adjustable from 0-0 to 2-4% / C- Environment 0 to 50C (32 to 122F); RH max 100%- Battery Type / Life 1-5V (4) / approximately 100 hours of continuous us, auto-off after 8 minutes of non-use- Length: 8-4- Height: 1-3- Width: 2-7 SKU: HNNI010

11. Milwaukee MW401 PRO Low Range Total Dissolved Solids Meter for Aquaculture

TDS - PPM Meter, Range: 0 -1990 ppm - With Automatic Temperature Compensation (ATC) and 1 Point Manual Calibration, Supplied with MA811D/1 TDS Probe, a 9 Volt Battery, a 20 ml - 1382 ppm Sachet Calibration Solution and Screwdriver for Calibration.- SKU: MWKIM049

MW401 is a Portable Low Range Total Dissolved Solids (TDS) Meter with Automatic Temperature Compensation. This instrument has been designed for aquariums aquaculture labs and water conditioning applications to meet the needs for equipment suited from hobbist to professional. It is also a great meter for food labs and water treatment applications. TDS testing provides a method to optimize chemical applications and minimize operational cost. In aquarium and aquaculture applications high concentrations of solids (TDS) can reduce clarity in water can decrease photosynthesis in aquatic plants. In water conditioning a high (TDS) level can affect the clarity and taste of potable drinking water. The MW401 has a range of 0 to 1990 mg/L (ppm) with a 10 mg/L (ppm) resolution. This (TDS) meter is supplied complete with conductivity probe with 1 m (3.3') cable and calibration solution. DESIGN FEATURES 0 to 1999 mg/l (ppm) range. Fast easy-to-read results with large digital LCD readout. Supplied with conductivity probe attached to a 3 foot cable. Accuracy to ±2% FS @ 25°C. Lightweight and portable. 300 hours of battery life with continuous use (battery included). SE510 Conductivity probe included. Starter Calibration Solution MI0032B 1382 ppm (included).