Drip Test Kits...

[Rbishop]

:iagree:

 

[Coler]

How would you do 1/3 of the 10 drops needed for Bottles 1 and 2 Nitrate or the 8 for 1 & 2 of Ammonia ?

Hmmm...would have to do 1/4...and 1/4 of the water...which is 1/4 of 10 = 2 mills water is very very very little water to get a reading from.

I guess you could do 1/2's but that would be a waste.

 

[Lithomunky]

I'm just sayin, it works for the pH, which seems to not matter to anyone.

I just bought one of the big pH kits today $26 on sale. And I see what everyone means about it being more complicated than I thought.

But if you feel like doing the little bit of math, it seems like it might be worth it; if you're a penny pincher like myself.

 

[injunear]

In theory I can't see anything wrong with it... I would at least use a syringe or something to accurately measure the sample water. 1/3rd of 10ml based on sight is tough to do. I would also guess that certain types of tests would be better for this method. Hardness tests specifically. These tests are less dependent on the shade of color and more dependent on whether or not the color has changed (from yellow to blue or green or whatever).

You'll decrese the accuracy by using less water....In fact, the instructions tell you that you can increase the accuracy of these tests by doubling the sample, e.g. using 10ml instead of 5 ml increases the accuracy of the test by 2.......

 

[Ajordan]

I didn't mean to say increase the accuracy, just that some types would likely be less affected by half the sample size.

In fact, for very hard water don't people often use half the sample so you can actually get a reading (this had come up for me at some point, I can't remember the specifics. I'll see if I can find what I was talking about.)