Aquarium Advice - Aquarium Forum Community - View Single Post - How to make a reference KH solution for CO2 measurement

Plantbrain · 12-14-2006, 05:38 PM

BTW, a nice cheap scale can be bought on ebay for 10-20$ for measuring 4.99 grams of Baking soda, cook it first though.

Then if you can, find a cheap graduated cylinder etc on ebay also, or www.AquaticEco.com, chem supply place etc, they should be pretty cheap, or a volumetric flask etc to make dilutions and stock solutions for any range of of Nutrients such as NO3, K+, PO4, etc.

Then you can calibrate all those cheap test kits

Regards,
Tom Barr

12-14-2006, 05:38 PM	#6
Plantbrain Aquarium Advice Freak Join Date: Jun 2006 Posts: 282	BTW, a nice cheap scale can be bought on ebay for 10-20$ for measuring 4.99 grams of Baking soda, cook it first though. Then if you can, find a cheap graduated cylinder etc on ebay also, or www.AquaticEco.com, chem supply place etc, they should be pretty cheap, or a volumetric flask etc to make dilutions and stock solutions for any range of of Nutrients such as NO3, K+, PO4, etc. Then you can calibrate all those cheap test kits Regards, Tom Barr