Single-use gloves, garments and other implements like pipets
have since taken over, dooming nearly all lab materials to landfills or incineration.
Adding a MegaQuant Wave, its associated pipets
and other lab gear adds some costs but removes others.
Samples were allowed to clot at room temperature for at least 60 min, centrifuged at 300 X g for 10 min, and serum was transferred into 1.5-mL polypropylene microcentrifuge tubes (Sarstedt) using disposable glass pipets
Using a transfer pipet
with the tip cut high to enlarge the opening, aliquot the mixture into microfuge tubes.
Materials * binocular microscope * student light microscope * fresh Cleome flowers (collected the morning of lab) * expanding fruit (ovary) from Cleome flowers that are two to three days post-pollination * prepared slides of a pollen mixture (Carolina Biological) * store-bought flowers (optional) * microscope slides and cover slips * disposable pipets
* small beakers of water * dissecting probes, scalpel * Petri dishes (100 mm) Activities 1.
An experiment was set up whereby we rubbed the prescribed amount of ointment (one-half teaspoon) onto the hands and body, then picked up a disposable pipet
(SAMCO Transfer Pipets
, San Fernando, CA) by the tip (bare-handed, ever-so-briefly), pipeting the control into a cup prior to assaying for progesterone (Access PROGESTERONE, Beckman-Coulter Inc.
Other glassware included pipets
, capillary pipets
for sample application, conical plastic disposable evaporation cups (Har-Len Medical, Pittsburgh, PA), and screw-cap jars containing various reagents into which the TLC plates would be dipped.
Eppendorf's Serological Pipets
for cell culture applications feature clear material and sharp graduation for easy read-out.
All materials such as plastic rulers, plastic graduated cylinders, pipets
, dialysis tubing, beakers (250 ml), sucrose solution, beads, etc., are provided in the kit.
The automatic pipeter roboticly pipets
predetermined amounts of specimen.