For collecting organic solvent for measuring working environment
On 2015-09-04 19:25:51
I used two mouth regularly, but I do not feel inconvenience much even with one mouth. Is not it the greatest charm that the price is cheap? Some of them got loose tightening of the cap and gas escaped. I used it while checking, but there are still loose ones, so it is desirable to make improvements not to loosen easily.