flinnsci.com CHEMISTRY MICROSCALE CHEMISTRY
317
Microscale Chemistry—Accessories, continued
Pipet, Beral-Type
Polyethylene disposable droppers are available in seven assorted types for the specified uses listed below. Pipet material is non-wetting so the pipets are easily rinsed and
reused. Pipets will store most liquids when in an upright position with little or no evaporation loss. The stem can be easily labeled for sample identification.
Type Approx. Capacity (mL) Bulb Draw
Approx. (mL)
Stem Diameter
(mm)
Overall Length
(mm)
Delivers Drops
Per mL Catalog No. Price/Pkg.
1 Thin Stem 4 3 2.5 153 20 AP1718 $ 1.78 Pkg. of 20
AP1444 26.90 Pkg. of 500
2 Micro Tip 5 3.5 5 144 50 AP1719 2.46 Pkg. of 20
AP1517 48.35 Pkg. of 500
3 Micro Tip, Small 1.75 1 1.25 50 43 AP2082 2.50 Pkg. of 20
AP2032 49.20 Pkg. of 500
4 Extra-Large Bulb 8 6 6.25 150 22 AP1720 2.09 Pkg. of 20
AP1445 29.20 Pkg. of 400
5 Graduated 5 3.5 5 153 25 AP1721 1.78 Pkg. of 20
AP1516 25.30 Pkg. of 500
6 Wide Stem 7.5 3.5 7.8 153 22 AP2253 2.18 Pkg. of 20
AP8480 33.10 Pkg. of 500
7 Super Jumbo 15 7.7 3 150 22 AP8850 2.72 Pkg. of 20
AP8842 34.35 Pkg. of 250
8 Needle Tip 2 1 1 100 34 FB1260 51.90 Pkg. of 400
3
Micro Tip, Small
AP2082, etc.
6
Wide Stem
AP2253, etc.
2
Micro Tip
AP1719, etc.
5
Graduated
AP1721, etc.
1
Thin Stem
AP1718, etc.
Super Jumbo
AP8850, etc.
7
Needle Tip
FB1260
4 8
Extra-Large Bulb
AP1720, etc.
Convert a Beral-Type Pipet into a
Micro Chromatography Column Cut Bulb Here
Tuft of Cotton
6.25 mm
• Simply cut the bulb in half.
• Force a tiny tuft of cotton into the pipet to retain the medium and then fill the stem with the medium.
• The top of the Beral-type pipet acts as a funnel.
Beral-Type Pipet Use Notes:
Beral-type pipets are slit, cut, heated, drawn, etc. to facilitate use by many innovative teachers utilizing “scaled down” chemistry.
Consult available lab manuals for the fabrication of many devices using Beral-type pipets.
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