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âš¡ Stay ahead in water quality control with precision calibration!
The Gain Express ORP Redox Meter Tester calibration set includes two 30ml bottles of 256mV solution designed for accurate calibration of ORP meters with a wide measurement range of -1999 to 1999mV. Ideal for professional and hobbyist use in aquariums, pools, and scientific applications, it ensures reliable and consistent oxidation-reduction potential readings to maintain optimal water quality.













| ASIN | B08J7NWH3V |
| Best Sellers Rank | #319,796 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #287 in Lab pH Meters |
| Brand Name | Gain Express |
| Color | ORP Sol'n 30ML x 2pcs |
| Customer Reviews | 4.3 4.3 out of 5 stars (30) |
| Manufacturer | Gain Express Holdings Ltd |
| Measurement Type | Millivolts |
| Model | ORP-256MV_2PCS |
| Number of Items | 2 |
| Number of Packs | 2 |
| Part Number | ORP Meter |
| Power Source | Battery Powered |
| UPC | 600316551373 |
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