Trident Inconsistent Reading At End Of Reagent Pack?

[ShaggyRS6]

Has anyone noticed that when you get toward the end of a Reagent Pack that your Trident starts reporting DKH in correctly? I have noticed this on my last two refills. When I get to around 30 tests of B and C the DKH starts to report low.

 

[TheHarold]

That happened on one of my Tridents briefly, but I adjusted the pickup tube to make sure it was drawing from the bottom of the container, and now its perfect.

 

[Coral Reef Keepers]

I have heard others report this but I have not experienced it myself. I get consistent readings on all tests up until Apex tells me to replace them.

 

[ShaggyRS6]

That happened on one of my Tridents briefly, but I adjusted the pickup tube to make sure it was drawing from the bottom of the container, and now its perfect.

I readjusted next test at 10 CST

 

[TheHarold]

I readjusted next test at 10 CST

Might need to prime if air got into tubes,

 

[ShaggyRS6]

Might need to prime if air got into tubes,

I’ll see what the 10am test reads and if it’s still down I’ll replace early. Only have a few tests left

 

[ADAM]

When the reagents get low the pickup tube may not be getting the correct amount causing it to continue “adding” reagent to the sample which will make the Trident think it used more reagent than it actually did and give an abnormally high result. My B and C normally need replacing when they report 30% left and my A usually around 20% left.

 

[Coral Reef Keepers]

When the reagents get low the pickup tube may not be getting the correct amount causing it to continue “adding” reagent to the sample which will make the Trident think it used more reagent than it actually did and give an abnormally high result. My B and C normally need replacing when they report 30% left and my A usually around 20% left.

I could totally see that happening if the Trident was sitting on an unlevel surface. If it was pitched enough in a certain way.