Hey!
Just wondering if anyone has experience with pipetting pH=14 solutions ( let’s say 300 uL) with 1000 uL channels?
How about pH = 3?
Does this damage the channels?
Are the tips tolerating this?
If you use a filter: does the filter absorb all the fume/protect the inside of the Channel?
Thanks in advance.
Hi there,
we did try to pipette bleach to sterilize tips inbetween samples (pH 11) however it did start to cause corrosion on the metal parts of the probe head. Would not recommend 
best
Dominik
Thanks for Sharing!
Hello @yunghans,
Our tips are manufactured with 100% Medical Grade Polypropylene and thus since this material is used to store many organic and inorganic solvents at room temperature in a general lab setting, the tips in most cases should be fine. It is oxidizing acids and bases that will be an issue.
And then you have to consider both the internal components of the channels as well as the system in general in cases of spills or working with acids and bases that have strong vapor pressures (especially if they are heated).
If you have access to the VENUS operator’s manual there is a chemical compatibility section in the appendix that has all of the information you need.
Matt
Was that because of the pH or because of the chlorine? I bet the oxidizing agent is what caused the oxidation.
Just from a chemist POV, I think it really matters what acid or base you are talking about. Even with the same pH, two different acids will have very different chemical properties.
Unless you describe what type of acid or base you are talking about you’re just going to be comparing apples to oranges with the responses you get.
Thanks a lot! 
What do you think about 1 M KOH then?
Hi @yunghans,
See below the snippet from the Venus 6.3 operator’s manual:
Matt
