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- General laboratory consumables
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Bottletop dispensers
You can easily and conveniently order bottle top dispensers from LABSOLUTE®, Brand, Hirschmann, Poulten & Graf, Socorex, Vitlab or other brands in the Th. Geyer online shop. The bottle-top dispensers with and without back-dispensing valve are a cost-effective way to measure liquids exactly and repeatedly. The dispensers have a choice of digital or analogue display and are supplied with adapters for all common bottle threads. The wetted components of the attachment burettes are made of inert materials, so that the dispenser can be filled and used with almost any chemical. In addition, there are particularly robust models for difficult applications such as hydrofluoric acid.
Bottle Top Filters Nalgene™ Rapid-Flow™, SFCA Membrane, sterile
Tissue culture filters for screw fitting onto bottles with 33mm or 45mm neck diameters. With surfactant-free, cellulose acetate membrane (SFCA) and polystyrene (PS) housing. Gamma-irradiated sterile. Pyrogen-free. Non cytotoxic. Low-pressure filtration can be carried out directly into a suitable sterile bottle. Caution: Only use sterile bottles authorised for use in low pressure applications. Always wear protective equipment for low pressure procedures. The membrane is characterised by its low protein binding, good throughput rates and minimal clogging with negligible protein loss. Permanent, moulded graduations. Quick-disconnection tubing adaptor with cellulosic vent plug for tubing with an internal diameter of 6mm to 9mm. Lot number, catalogue number, membrane type, pore size and expiration date are printed on filter units for easy identification and lot traceability....
Dispensers, bottle-top, ceramus®
New dispenser technology from Hirschmann laboratory apparatus, with ceramic pistons. ceramus ® are a high-precision, bottle-top dispenser range for almost all liquids.
- Environmentally-friendly, reagent-saving, recirculation valves
- Tough, ceramic pistons
- Simple, self-locking volume selection
- When not in use, pistons can be locked and delivery tubes capped to prevent loss of reagent.
- Fixed interval graduations give excellent reproducibility
- 45mm screw neck and adapters supplied allow use with a variety of reservoir bottles
- Smooth-action piston minimises operator fatigue during serial dispensing
- High-grade construction materials provide long operational life
- autoclavable at 121°C
Dispensers, bottle-top, ceramus® HF
Bottle top dispenser for HF and other extremely aggressive liquids, with reagent recirculation system, digital volume setting in various steps. Declaration of conformity acc. to DIN 12600. Piston, cylinder, valve seats and balls are made of highly pure ceramic (Al2O3), valve springs are made of platinium/iridium, autoclavable at 121 °C, complete with thread A 45 mm, 3 thread adapters (A 32, S 40 and A 38), 1 screw-coupled suction tube, 1 discharge tube unit complete, 1 spanner for valve, with individual serial number and test certificate, conformity certified....
Dispensers, bottle-top, FORTUNA® OPTIFIX® SAFETY S
Bottle-top dispensers for dispensing strong fuming acids and very aggressive liquids, with safety stopcock and additional safety valve in the ventilation tube, with PTFE-encased dispensing piston with sealing lip, FIX adaptor made of solid PTFE, no metal springs in the valve block (no contamination), comes with 2 x PTFE GL40/GL45 adapters and PTFE inlet tube....
Dispensers, bottle-top, FORTUNA UNIVERSAL® OPTIFIX® HF
With solid PTFE dispensing barrel and glass-cored, PTFE coated plunger with seal (prevents acid vapours escaping from the storage bottle). No metal springs in the valve block (no contamination).
Items supplied: Hydrofluoric acid dispenser without reservoir bottle, with PTFE valve block (GL32), PTFE suction and discharge tubes and two PTFE bottle adapters (GL40 and GL45)....
Dispensers, VITLAB® SIMPLEX2
With variable volume and calibration mechanism.
- quick, easy and precise volume adjustment due to interior scalloped track and practical screw mechanism
- no drips after tube has been capped
- easy calibration adjustment
- high-quality materials (PTFE, PFA, FEP, borosilicate glass, platinum-iridium) ensure high chemical resistance aganinst most acids, solvents and bases
- a positive displacement plunger with a PFA seal minimizes the crystallization of liquids and thus the clogging of the plunger
- easy to dismantle for cleaning, no tools necessary
- completely autoclavable at 121°C
- device can be rotated 360° on bottle
- DE-M marked
- with GL 45 thread
- with screwable discharge valve
EM dispensers, PP
Conformity certified, bottle top dispenser with precisely grinded glass piston for unproblematic and organic liquids which do not affect polypropylene. Discharge valves and valve seats consisting of high-purity aluminium oxide ceramic. Declaration of conformity acc. to DIN 12600. With digital volume setting on various steps, autoclavable at 121°C, complete with thread A 32 mm, 3 thread adapters (A 28, S 40 and A 45), 1 screw-coupled suction tube, 1 discharge tube unit complete, 1 spanner valve, with individual number and weighing protocol....
