Dry Tab Test Kits

[sam.stoneley]

I have been given some dry tab test kits, but no test tube. I have a couple of test tubes from Tetra kits I could use, but not sure how much water to fill. Dry Tab instructions say fill to line, does anyone know how many ml these tubes hold to line?

 

[Leslie]

Mine is 5 ml to line... don't know if this is standard or not.