Description
TRANS INSTRUMENT Calibration Solutions for product:
Aqua, ECO, Horti, Senz pH tester, Senz pH Pro UnipH testa, ArowanaPro, All Portable & Bench pH meter
CAL pH 7.00 (10 Sachet/box) – for pH pen
CAL pH 7.00 (90ml Bottle) -for pH pen
CAL 0.5%/ 5 ppt (90ml Bottle) – for KoiMedic/Koimedic Pro
CAL 0.5%/ 5ppt (10 Sachet/box) – for KoiMedic/Koimedic Pro
CAL Conductivity 1413uS (90ml) – for Discus soft
CAL 359ppm Standard TDS (90ml) – for Crystal Shrimp
CAL 30ppt Standard Salinity (90ml) – for Marine Salt
***Please ensure you have selected the correct solutions before purchasing.
TRANS INSTRUMENT Calibration Solutions for Your pH and Conductivity Pens
Calibration solutions are what keep a digital pen honest, and these are matched to the TRANS INSTRUMENT range including the Aqua, ECO, Horti and Senz pH testers, the Arowana Pro, and the KoiMedic and Discus Soft pens. They come as either single-use sachets or refillable bottles in the right values for each meter, from pH 7.00 buffer to the salinity and conductivity standards used by the specialty pens. Using the correct solution for your model is essential.
We always remind hobbyists that an uncalibrated pen gives confident-looking numbers that may be wrong, which is risky when you are managing sensitive species. In Singapore’s warm rooms electrodes drift over time, so calibrating before important readings is good practice. The sachets are convenient for single calibrations and travel, while the bottles suit regular checking. Rinse the probe between buffers and never reuse a sachet to keep your readings accurate.
Browse our wider water testing and care range, and read our pH calibration solution guide and water testing mistakes guide to test reliably.

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