Confusing CYA results

[needsajet]

Excellent! Two helpful 'solutions'

 

[AUSpool]

Interesting thread, I'm curious as we're told to test samples soon after you take them.... I assume they have to ship these clear choice lab samples, would they still be accurate after so much time (days I'm thinking)???

Just to avoid any potential confusion, we don't ship anything to CCL for testing. We purchase and they ship to us the kits, reagents and standard solutions.

 

[BasicTek]

Well I received my samples today and had enough sun to give them a try (as opposed to testing on a cloudy overcast where I think results are more likely off)

The CYA sample of 50 I tested 3 times and came up with 50 each time (one time there was a slight hint of a dot at 50, but if it were a real test I would have choose 50 easily)
The TA of 100 I was also spot on (started changing at 9 drops complete change at 10 no further change on drop 11) so 100 it was.
The CH sample was 200 I had color changing at drops 19 and 20, complete change at 21 no further change at 22 so I was 10 off at 210 (5%)

I'm really glad I was able to use this as a baseline for my testing now I really fee confident going forward.

Thanks again!!!