The Bellows Samplers from SP Scienceware are one-piece molded polyethylene samplers, with bellows and calibrated sampler tube to indicate collected volume. Long tapered tips have a 4 mm opening. Non-sterile. No graduations.
Specification
Packaging: pack of 5 L: 49.5 cm (19 1/2 in.) Bulb draw: 50 mL