Salifter Refracto Check is a testing solution with a density of 35 ppm for the calibration of refractometers. The content is sufficient for up to 100 testings.
- tony m. wrote about Salifert Refracto Check in 2018:
This is a very good product ,far better than calibration with distilled water and very accurate, after a couple of water changes my corals look better .I would recommend that anyone who owns a refractometer should have this.
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