Offered here is the 250 mL flint glass reagent jar with a wide mouth.

It can be used to store either liquids or solids. 

The ground glass stopper provides an airtight seal.

 Specifications:  

Offered here is a 10 mL specific gravity determination bottle.  Featuring a 10/14 perforated stopper with a 2 mm tapered bore that is concave on the under side and flat on two sides.

The specific gravity bottle is another instrument (other than a hydrometer)  used to measure specific gravity at 20 C.

The bottle is weighed empty, filled with the liquid whose specific gravity is to be found, and then reweighed. The difference in weight is divided by the weight of an equal volume of water to give the specific gravity of the liquid.

The density of water @ 20 C = 0.99821 g/cm3

    Wt. Full - Wt. Empty     =  Specific Gravity 
 .99821 g/cm3 x (10 mL)

Offered here is an 8 piece milligram leaf weight set with a plastic storage container

Accuracy +/- 15%