Globe Scientific Transfer Pipettes w/Large Bulb 7 mL, Non-Sterile, Graduated to the 3 mL Mark, LD Polyethylene, 155mm, 135030 (Box of 500) 500 per box Globe Scientific's transfer pipettes are used to draw and dispense liquids in controlled, reproducible drop sizes. Temperature range: -196C to 90C Produced from Low Density Polyethylene (LDPE) Non-toxic and chemically inert to biological fluids and most acids.