Want to Prevent your API Test Tubes From Leaking? Try this out!!!
Are your API Test Tubes leaking every time you shake them, especially with nitrate tests? Here's a little tip you can do to prevent them from leaking! All that is needed is a 5/16" Inner Diameter O-Ring and you're good!
~Purchase the O-Rings here (Amazon Affiliate Links)~:
►►https://amzn.to/3PJbgzh (CAN)
►►https://amzn.to/3FEvsxw (USA)
~Social Links~:
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~ Camera: Samsung Galaxy S20 Rear Main Camera