amtra-test-ph-6-in-1

ZenTest® PH60-Z Smart Pocket pH Tester Kit

Apera Instruments, LLC-AI221 SX610 Waterproof pH Pen Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Suitable for Test Tube Testing, Replaceable Probe: : Industrial & Scientific

AMTRA Multicheck 6-in-1 Test : : Pet Supplies

Apera Instruments PH60-WW Handheld pH Meter Tester Kit with LabSen 335 ATC pH Electrode for Lab-Grade pH Measurement in Wastewater, Suspensions, and Emulsions: : Industrial & Scientific

Simply the most reliable pocket ph. tester with the best value for all kinds of regular ph. testing, such as hydroponics, education, swimming pool, water treatment, etc. Up to 3 points of Auto calibration with Buffer recognition and 0 to 50c Auto temperature compensation (ATC), 0.1 ph., 0.5C accuracy with 0 to 14.0 ph. measuring range, Auto recognition and indication of stable values improves repeatability, saving you the trouble of guessing when to manually hold measurement.

Apera Instruments Ai209 Value Series PH20 Waterproof PH Tester Kit, 0.1 PH

Apera Instruments PH60Z-HT Smart Handheld PH Meter Tester Kit with LabSen 865 pH/Temp. Electrode for Lab-Grade PH Measurement in High Temperature

Amtra - Digital PH tester for aquariums and calibration

AMTRA CLEAN PROCULT - billions of live bacteria - activator of the nitrogen cycle for fresh and saltwater aquarium filters, water clarifier

AMTRA CLEAN PROCULT 50ml

Water parameters: a brief introduction - Amtra

Tetra Test 6in1- Prueba de agua para controlar los seis valores más importantes del agua en un solo paso, permite una rápida y fácil comprobación de la calidad del agua (25 strips)

Amtra - Digital PH tester for aquariums and calibration

JBL - ProAquaTest pH 6.0-7.6 - pH analysis in fresh water

Amtra - Oak extract - 300 ml, PH regulation, Water care, Care

Product 1: Easy auto. calibration with buffer recognition; auto. temp. compensation (ATC) ensures accuracy in various temperatures (32 to 122F)

APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy & n Buffer Solution Kit (pH 4.00 & 7.00), Plus 4oz. 3M KCL

Determinants of multiheme cytochrome extracellular electron transfer uncovered by systematic peptide insertion