LOL another dumb question refractometer edition

Brooke24 · Dec 12, 2020

I fixed my first question. But, while calibrating it, where do I turn it to on the screw? Initially, what should I put the numbers on the right to?

Mr_Knightley · Dec 12, 2020

You have to adjust the lens by turning the end while looking through it. Turn it either direction until it's clear. Looking at the light through the right angle will also help. There should be a manual in the box too that explains all of this in detail.

BeMoto · Dec 12, 2020

You can focus the refractometer by twisting the eye piece at the end. Cleaning the viewer window and top with a paper towel might help too.

Mr_Knightley · Dec 12, 2020

what does the bottle of calibration solution say it matches to? Always match your calibration directly to the solution used.

Brett S · Dec 12, 2020

When you calibrate it you adjust it so it reads whatever you are calibrating it to. If you are using RODI water then you would turn the screw so it reads 0.0. If you are using 35ppt solution then you would adjust it so it reads 35ppt

BeMoto · Dec 12, 2020

Also whatever your testing seems to be way low. What are you shooting for.

Brooke24 · Dec 12, 2020

BeMoto said:
Also whatever your testing seems to be way low. What are you shooting for.

Yeah lol, I hadn’t calibrated it, that was the solution and i twisted it wrong. When being calibrated, the numbers in the right are supposed to be 35 right?

Brooke24 · Dec 12, 2020

Mr_Knightley said:
You have to adjust the lens by turning the end while looking through it. Turn it either direction until it's clear. Looking at the light through the right angle will also help. There should be a manual in the box too that explains all of this in detail.

Yes, I wanted to make sure to calibrate it it should be at 35 ppm (the numbers on the right ) right?

Brooke24 · Dec 12, 2020

Thanks everyone for their help, I just wanted to make absolute sure I was doing this right. Thank u!!

BeMoto · Dec 12, 2020

Adjust the screw in eithere direction tell you hit the number you want. I always go up past the 1.026 and go down to it. I do this everytime I caliperate.