Hanna Nitrate Checker O-Ring

ApolloReef

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Has anyone had any issues with the Hanna Nitrate Checker O-ring on the filter apparatus? Everytime I try and filter, no matter what I do the fluid with the solids bypass the filter making the test kit unusable. The O-ring looks a bit roughed up and I wonder if I damaged it while screwing it in or washing it out. I reached out to Hanna and am still waiting on an answer.

In the meantime, I can't see any place that sells the o-ring specifically for the checker. Can I buy it from a hardware store or somewhere online? It worked great for 3 tests, and I really like the kit, and would love to get it working again.
 

T_BONE

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You might can check at your local auto parts house. Take the old one with you to ensure the diameter and size is the same. They usually have a good selection of o-rings and kits. Hope this helps.
 

dadnjesse

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Are you making sure to screw the syringe into the filter holder. I was having that same problem, I wasn't screwing the syringe in all the way. And you have to go very slow drip by drip.
 
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