Quote: (Originally Posted by
divetheworld)
Neil, check it every three months in accordance with the HSE guidlines (DVIS9) if your pump is maintained correctly.
Maintain less than 35mg/m3.
Anyone see the contradiction here?
No?
Go read it again.
Now tell me how you "maintain" something you are only measuring once every three months.
Then justify your position when the appliance to measure conitinually costs about $50, the cards are $3 each and last a year or more (they revert back to blue when dried) and you now KNOW that your gas is dry all the time - and thus that your purification system is working
all the time.
The "test every three months because that's what the government says" guys have sold me several tanks of bad gas over the last few years. But I'm quite sure that once every quarter they had a test that says their gas is ok.
The certificate on the wall says so.