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Colorimeter MS-106B

Posted: 29 Oct 2019, 20:44
by harveyradar
I'm looking for the instructions for the Colorimeter MS-106B. Can anyone help please?
They come in two different "branding" labels; "Mitchellsearch" and "chemical and scientific Aid Centre". they are identical and use a red, green and yellow LED.
Colorimeter MS-106B sml.jpg
Thanks
Harvey