Nalge 3640 Safe and easy-to-use Includes reservoir bottle with screw cap, 0.9 meter of PVC tubing and dust cap Similar to 1985R15 series, but automatic zero type with low-density polyethylene squeeze bottle reservoir connected to side filling tube by PVC tubing.

For filling 25 or 50 mL glass or plastic burets Nalge 3645 Self-zeroing Kit includes a 1,000 mL LDPE squeeze-bottle; 1.2 meters of 1/8” bore clear PVC tubing; polypropylene fill-tube; polypropylene adapter plug which is reversible to fit either size buret; and two size 63…