100 Pcs Disposable Specimen Cups 4oz Specimen Containers Urine Cups with Leak Proof Screw on Single Use Stool Sample Collection Kit for Safe Urine Pee Stool Sample Analysis Testing

I used to use baby food jars for small parts but these are better. I discovered them when I needed something for testing aquarium water but now use them for screws, nuts and even small electrical components. They are great for separating resistors Ω, diodes, etc. and unlike baby food jars, they don’t break when you knock them off test bench.

good product. fast delivery