Skim
Active Member
- Joined
- Jan 3, 2014
- Location
- Brantford, Ontario
Ok I did a few different test with my meters and thought I would post what I found. I have a Milwaukee MA887 and a Red Sea refractometer that I use for testing, I also have a Old Instant Ocean Hydrometer and glass tube hydrometer. Amazing that after all these years and the IO meter is very accurate still and the glass hydrometer is still today considered one of the most accurate meters to use but can be a pain. Anyhow I was testing with Milwaukee and was getting a reading of 1.027 and 35 psu and 36 ptt and I confirmed it with the Red Sea unit.
My room temp. is 72 to 73 and tank is 79 and went back and read about ambient temp on D&D site and Red Sea Video, and decided I would try something. I put my hand on the test area of the Milwaukee and watched the temp rise to 79 and did a retest well interesting I now I got 1.024 33 psu and 34 ppt that is quite a difference so I thought how can I try this with the Red Sea unit. What I did is watch how long roughly it took to get the temp up on the Milwaukee and then stuck the RS unit in my armpit ( make sure you have a shirt on don't want any BO juice or sweat getting onto the meter ) for about 2 min and tested bang on same as the Milwaukee. I then became confused what is the better way or accurate way of doing this, so I phoned and spoke to Jason at Milwaukee Instruments and told him of my little experiment and he told me " that doing the readings by bring the units body temp up to what the water temp is, is far more accurate and the best way to get the most accurate readings". So you may want to try this out because my tests showed quite a big difference and your 1.025 maybe a 1.022 or 1.023 with a 30 or 31 ppt.
Just something else to roll around in your head. Lol
Skim
My room temp. is 72 to 73 and tank is 79 and went back and read about ambient temp on D&D site and Red Sea Video, and decided I would try something. I put my hand on the test area of the Milwaukee and watched the temp rise to 79 and did a retest well interesting I now I got 1.024 33 psu and 34 ppt that is quite a difference so I thought how can I try this with the Red Sea unit. What I did is watch how long roughly it took to get the temp up on the Milwaukee and then stuck the RS unit in my armpit ( make sure you have a shirt on don't want any BO juice or sweat getting onto the meter ) for about 2 min and tested bang on same as the Milwaukee. I then became confused what is the better way or accurate way of doing this, so I phoned and spoke to Jason at Milwaukee Instruments and told him of my little experiment and he told me " that doing the readings by bring the units body temp up to what the water temp is, is far more accurate and the best way to get the most accurate readings". So you may want to try this out because my tests showed quite a big difference and your 1.025 maybe a 1.022 or 1.023 with a 30 or 31 ppt.
Just something else to roll around in your head. Lol
Skim