B” type needles has a 90° bevel for precise pipetting. This design relases drops completely, for maximum repreducibility. Ideal for HPLC sample injection. Plunger: stainless steel (plunger runs inside the needle). Barrel: borosilicate glass. Precision: < +/- 1% of the volume. Main use: sample dosage for gas chromatography & dosage of small volume samples & for thin layer chromatography.
