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๐ง Stay ahead in water quality with precision you can trust!
The Gain Express ORP Redox Meter calibration solution offers a precise 256mV standard for accurate oxidation-reduction potential measurements across a wide range (-1999 to 1999mV). Supplied as two 30ml bottles, it ensures reliable, consistent calibration for digital ORP meters used in pools, aquariums, and other water quality applications, delivering professional-grade results beyond basic test strips.













| ASIN | B08J7NWH3V |
| Item model number | ORP-256MV_2PCS |
| Manufacturer | Gain Express Holdings Ltd |
| Package Dimensions | 9.8 x 9.6 x 5.41 cm; 118 g |
C**W
I won't go back to basic test strips again. These are quick and easy for pool water monitoring and the results align well with other more complicated tests I've done.
D**T
Conforme
M**L
As described by seller
L**.
Parfait
U**1
I like the small size and it was well sealed. It didn't have a lot number, no expiration date and no documentation for traceability.
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