Milwaukee MA887 reading off?

[b4tn]

I ran out of calibration fluid for my Milwaukee so I re filled it with RO/DI and have been using it like this for some time. Out of curiosity today I put some of the 1.025 fluid on it and it read 1.028? I have not used It in probably well over a year or more but honestly don’t recall the reading I got with it before. I put bottled water on the meter and got 0 just like the RO/DI sample. My tank reads 1.026 but that’s where I keep it based on the meter. Could my 1.025 fluid be expired or off? It’s always had the lid on it so it shouldn’t be evaporation. I noticed a small scratch on the prism could that be an issue?

 

[CC13]

I ran out of calibration fluid for my Milwaukee so I re filled it with RO/DI and have been using it like this for some time. Out of curiosity today I put some of the 1.025 fluid on it and it read 1.028? I have not used It in probably well over a year or more but honestly don’t recall the reading I got with it before. I put bottled water on the meter and got 0 just like the RO/DI sample. My tank reads 1.026 but that’s where I keep it based on the meter. Could my 1.025 fluid be expired or off? It’s always had the lid on it so it shouldn’t be evaporation. I noticed a small scratch on the prism could that be an issue?

Mine always reads 1.027 when I use calibration fluid I thought it was normal and accounting for the error when testing. I use a refractometer to double check.

 

[Burrito]

I had an issue when I first got mine that the reading were constantly off, including the reference fluid. take a Qtip and put some windex on it and clean the sensor really good, then follow up with some RODI. (these were instructions as per Milwaukee, I called them) and try the reference fluid again. they basically said my sensor was dirty even though I thought it was clean

 

[CC13]

I had an issue when I first got mine that the reading were constantly off, including the reference fluid. take a Qtip and put some windex on it and clean the sensor really good, then follow up with some RODI. (these were instructions as per Milwaukee, I called them) and try the reference fluid again. they basically said my sensor was dirty even though I thought it was clean

I’m gojng to try this tomorrow good idea.

Did this correct the error issue?

 

[b4tn]

I will have to check tomorrow. I can’t seem to find windex or cue tips lol

 

[Burrito]

I’m gojng to try this tomorrow good idea.

Did this correct the error issue?

Yes it did.

 

[Philipgonzales3]

Mine always reads spot on. But I've only had it a couple of weeks.

 

[lakai]

the 1.025 calibration fluid always reads 1.026 off a bit but not enough to complain about. Perhaps some of the fluid evaporated over time ? Clean it with a 99% isopropyl alcohol not windex.

 

[wangspeed]

I have verified this with multiple Milwaukee meters. It is very consistently high in readings. If you properly calibrate a refractometer with a known good calibration fluid, it reads high with the Milwaukee. Oddly, the Hanna version of this same meter was spot on, but I have only tested one of those.

My meter reads 1.028 with 1.026 calibration fluid. So I shoot for 1.028. This is confirmed with a refractometer and my salinity probe on my Apex.

 

[hart24601]

I always got high readings and ended up selling mine. I just didn't trust it.

 

[ihavecrabs]

I think my calibration fluid evaporated a bit.. mine reads 1.027 with the 1.025 calibration fluid. I had my salinity validated at the LFS and it was 1.025 there vs the unit reading 1.026. Who knows! Close enough though lol.