So I got one of these a few months ago and it's been a weird experience.
When I cal with their test fluid (0 salinity) and use their test cal solution (1.026), I get 1.026 every time. When I use other test solutions (Pinpoint and Aquacraft) I get 1.028 every time. When I test my tank water (which has been brought up on a standard refractometer calibrated with the Pinpoint and Aquacraft solutions) I get 1.028.
I realize the stated accuracy is +/- 0.002, so it is technically within spec. And the repeatability seems spot on every time (although I haven't done a formal test).
It just seems weird that their test solution reads 1.026 and the others are 1.028. Their test solution does have a weird blue-ish tint to it...
Has anyone else has this experience?
I'll continue to use it and just shoot for 1.028, but it kinda irks me.
When I cal with their test fluid (0 salinity) and use their test cal solution (1.026), I get 1.026 every time. When I use other test solutions (Pinpoint and Aquacraft) I get 1.028 every time. When I test my tank water (which has been brought up on a standard refractometer calibrated with the Pinpoint and Aquacraft solutions) I get 1.028.
I realize the stated accuracy is +/- 0.002, so it is technically within spec. And the repeatability seems spot on every time (although I haven't done a formal test).
It just seems weird that their test solution reads 1.026 and the others are 1.028. Their test solution does have a weird blue-ish tint to it...
Has anyone else has this experience?
I'll continue to use it and just shoot for 1.028, but it kinda irks me.