Non-self-sealing filter tips from BRAND have a PE filter that is free from chemical additives. Permeability is controlled by the combination of pore size and filter length, so that no aerosols can reach the pipette shaft. These filters function with consistent reliability. On the other hand, liquids can pass very slowly should they accidentally contact the filter.
Since the filter does not swell as in the case of self-sealing filter tips, the sample can be recovered from the filter by simply actuating the pipette‘s blow-out function, or by centrifugation if necessary. This is clearly an important advantage of non-self-sealing filters, especially when working with valuable samples. As an added advantage, the absence of filter additives protects samples from contamination.
BRAND pipette tips are produced using the most advanced cleanroom techniques, using resins free from oleamide and diHEMDA. All rack packed tips are free from DNA, RNase, ATP and endotoxin within detectable limits.
BRAND filtered pipette tips to fit ultramicro / crystal / nano-cap™ pipettes are available in the following packaging types:
TipBox: BRAND's new TipBox system has a hinged lid - remove and rotate the lid 180 degrees if you prefer a lift-off design. Trays are color coded for easy identification, and filled with colorless tips. Tip carrier plates allow partial loading of multichannel pipettes, and are reinforced for stability; yet reduce waste compared with previous designs. Tip Boxes are reloadable with our TipRefills.
TipRefill: Reloads for our TipBox system. Sterile TipRefills are supplied with a transfer aid to allow contact-free insertion of the TipRefill into a previously sterilized TipBox.