🧪 Calibrate with Confidence, Measure with Precision!
The Apera Instruments 1413 µS/cm Conductivity Standard Calibration Solution is a 16 oz bottle of precisely formulated solution designed to calibrate conductivity meters with high accuracy. Made in the USA, it offers reliable, consistent performance for professional and industrial applications.
P**M
Use to test accuracy of e.c. pen.
Must have for the home grower...
S**H
As in picture
As promised n expected
A**R
Water in a bottle
Water in a bottle
Trustpilot
4 days ago
1 week ago