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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.
Capillary columns GC BPX5
5% Phenyl Polysilphenylene-siloxane. General purpose GC column for routine gas chromatographic analysis. Suitable replacement for: DB-5, DB-5ms, DB-5.625, XTI-5, Rtx-5ms, Ultra-2, HP-5, HP-5MS, HP5-TA, SPB-5, MDN-5S, CP-Sil8CB, Rxt-Sil 5MS, AT-5ms, VB-5, ZB-5, VF-5ms.
- Very low bleed
- Non-polar
- Extremely inert
Capillary columns GC BPX70
70% Cyanopropyl Polysilphenylene-siloxane. Able to be solvent rinsed. Industry standard column for fatty acid methyl esters, carbonhydrates, pharmaceuticals, GC/MS applications. Suitable alternative to: DB-23, Rtx-2330, SP-2330, CP-Sil 88, SP2380, HP-23....
Capillary columns SolGel-Wax
Polyethylene Glycol (PEG) in a SolGel matrix. Suitable replacement for: DB-Wax, Rtx- Wax, Stabilwax, HP20M, HP-Wax, HP-INNOWax, Supelcowax-10, AT-Wax, Nukol, CP, Wax 52CB, VB-WAX, ZB-WAX.
- Robust high-temperature column.
- Polar phase
- Low bleed and inert
GC Capillary columns HYDRODEX β-6TBDM
cyclodextrin derivatives with high melting point:
for GC-enantiomer separation diluted with polysiloxanes
Heptakis-(2,3-di-O-methyl-6-O-t-butyldimethyl-silyl)-β-cyclodextrin. Phase diluted with optimised polysiloxane recommended for γ-lactones, cyclopentanones, terpenes, esters, tartrates.
...
GC Capillary columns HYDRODEX β-TBDAC
cyclodextrin derivatives with high melting point:
for GC-enantiomer separation diluted with polysiloxanes
Heptakis-(2,3-di-O-acetyl-6-O-t-butyldimethyl-silyl)-β-cyclodextrin. Phase diluted with optimised polysiloxane recommended for alcohols, esters, ketones, aldehydes, δ-lactones.
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GC Capillary columns LIPODEX® E
LIPODEX® cyclodextrin phase for enantiomer separation
base material: cyclic oligosaccharide consisting of eight glucose units bonded through α-1,4-linkages (y-cylodextrin) regioselective alkylation and acylation of the hydroxyl groups leads to a lipophilic phase, which is well suited for GC enantiomer analyses; important advantage: many compounds can be analysed without derivatisation (however, for certain substances enantioselectivity can be favourably influenced by formation of derivatives)...
OPTIMA® 1 high performance capillary columns for GC
100% dimethylpolysiloxane
nonpolar phase separation of components according to boiling points thick film columns ≥3µm film are especially recommended for solvent analysis.
Similar phases: Permabond
® SE-30, OV-1, DB-1, SE-30, HP-1, SPB-1, CP-Sil 5 CB, Rtx-1, 007-1, BP1, MDN-1, AT-1, ZB-1, OV-101....