产品描述：
?One Mark? Pipettes
Complies with BS 1583, ISO 648 and DIN 12690. Calibrated for delivery. Manufactured from soda-lime glass. Tooled jets for extra strength and to ensure correct outflow time. Markings and inscriptions permanent amber stain.
Available in 5ml, 10ml, 25ml and 50ml capacities and types Class A and Class B. Class A is available in a pack of 2. Class B available as singles or in packs of 5.