avatar: Khabu
1 posts
Replied to Khabu's post on November 23rd, 2015

Hello everyone!

I've just bought DR 900 Multiparameter Handheld Colorimeter for water Quality but it doesnt come with control standard for determining precision of equipmet. I am afraid of buying Control standard that will not fit in my DR 900. So what's real necessary to know about Control Standards so that i can order.