I ran a Calcium Hardness test with the tf100 kit. I filled the cylinder to 25ml. I added the 20 drops of r-0010. Then added 5 drops of r-0011L. The sample was suppose to turn red but it turned a pale pink. Then I added drops of r-0012. At 25 drops, the sample became clear. I continued to add and stopped at 70 drops and the sample never turned blue. I then redid the sample adding 2 drops of r-0012 prior to adding R-0011L in case of the presence of copper but I had the same results. Do I not have enough calcium to turn the sample red or do I have another problem?
Question about CH test with tf100
- Thread starter slayer
- Start date
The exact shade isn't as critical as the change. When it went clear is probably when it turned blue. You can always add a few extra drops of the R-0011L to get a deeper color. Then the color change should be easier to see. Also, how old are those reagents? If the R-0011 bottle is discolored at all, the stuff inside has gone bad.
That's too old.
Did you know you can get a complete refill set for the test kit without any of the hardware pretty inexpensively? TFTestkits.net