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🧪 Stay ahead in water quality—calibrate like a pro, every time!
The Gain Express ORP Redox Meter Tester calibration kit includes two 30ml bottles of 256mV solution designed for precise calibration of ORP meters with a wide measurement range of -1999 to 1999mV. Ideal for maintaining optimal water quality in pools, aquariums, and scientific applications, this kit ensures reliable, consistent readings and easy, professional calibration.













| ASIN | B08J7NWH3V |
| Best Sellers Rank | #224,984 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #198 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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