Air valves, PP, for PFAS analysis
The air valve blocks harmful vapours and ensures safe pressure equalisation in the storage tanks. For PFAS analysis of polyfluorinated chemicals according to DIN 38407-42/ DIN 38414-14.With filter membraneLuer-Lock connectionChange indicator
Air valves, PP, PFAS Analytic
The integrated non-return valve avoids evaporation of solvents and lets flow ambient air into the bottle in case of vacuum. The upstream PP membrane restrains pollutant particles and other contaminations from outside.Free from polyhaloolefinsLid with aeration opening and Luerlock connectorClip-on service life indicator
Alkylation kit
For improved volatility, better thermal stability or low limit of detection in gas chromatography prerequisite: quantitative, rapid and reproducible formation of only on derivative halogen atoms introduced by derivatisation (e.g. trifluoroacetates) allow specific detection (ECD) with the advantage of high sensitivity elution order and fragmentation patterns in MS can be influenced by a specific derivatisation.Reagents for silylation - alkylation (methylation) - acylation are available.Which is the proper reagent for methylation?Test kit for determination of the optimum alkylation.
Alkylation reagents for GC - Trimethylsulphonium hydroxide
For improved volatility, better thermal stability or low limit of detection in gas chromatography prerequisite: quantitative, rapid and reproducible formation of only on derivative halogen atoms introduced by derivatisation (e.g. trifluoroacetates) allow specific detection (ECD) with the advantage of high sensitivity elution order and fragmentation patterns in MS can be influenced by a specific derivatisation.Reagents for silylation - alkylation (methylation) - acylation are available.TMSH (0.2 M in methanol) M.G. 94.06
All-glass syringes Dosys™, borosilicate glass 3.3
The reusable borosilicate glass syringes offer superior chemical and heat shock resistance. A precious, low cost alternative to disposable plastic syringes, complementing the self-refilling models in many applications.Precision-machined plunger and barrel,Excellent fitting and liquid tightness (not gas tight)Permanent, high visibility graduationsAutoclavable at 121 °C / 250 °F
ALUGRAM® Nano-SIL unmodified Nano-silica layers for HPTLC
Support materials for TLC ready-to-use layersGlass plates: glass, ~ 1.3 mm thick, high requirements for weight, packaging and storage, ideal torsional strength, high temperature stability, susceptible to breakage, can not be cut with scissors, high resistance against solvents, mineral acids and conc. ammonia, suitability for aqueous detection reagents depends on the phasePOLYGRAM®: polyester, ~ 0.2 mm thick, low requirements for weight, packaging and storage, low torsional strength, max. 185 °C temperature stability, not susceptible to breakage, can be cut with scissors, high resistance against solvents, mineral acids and conc. ammonia, very suitable for aqueous detection reagentsALUGRAM®: aluminium, ~ 0.15 mm thick, low requirements for weight, packaging and storage, relatively high torsional strength, high temperature stability, not susceptible to breakage, can be cut with scissors, high resistance against solvents, low resistance against mineral acids and conc. ammonia, limited suitability for aqueous detection reagentsALUGRAM®Nano silica 60, specific surface (BET) ~ 500m²/g, mean pore size 60Å, specific pore volume 0.75ml/g, particle size 2 to 10µm. Indicator: manganese activated zinc silicate with green fluorescence for short-wave UV (254nm).Binder: highly polymeric product, which is stable in almost all organic solvents and resistant towards aggressive visualisation reagents. Narrow fractionation of the silica particles allows sharper separations, shorter developing times, shorter migration distances, smaller samples and an increased detection sensitivity compared to SIL G plates.Available as glass plates with or without fluorescent indicator (UV254).
Aluminium oxide adsorbents for low pressure column chromatography
Aluminium oxides produced by dehydration of different aluminium hydroxides, e. g. hydrargillite between 400 and 500°C, activity grade I, particle size 50 to 200µm, specific surface (BET) ~ 130m²/g.
Aluminium oxide layers for TLC
Standard, rigid TLC plates in a choice of media, backing materials, and with dimensions as outlined below.*with 254 nm UV indicator
b.safe caps, B 83, PE
Screw caps, with freely movable insert made of PTFE, with female threads UNF ¼", for connecting capillary tubing (O.D. 3.2 mm) and a b.safe air valve with service life indicator.Scope of supply:fittings (PFA), blind fittings (PFA), air valve
b.safe Caps, GL 28, PPS
Screw caps, with freely movable insert made of PTFE, with female threads UNF ¼", for connecting capillary tubing (O.D. 3.2 mm) and a b.safe air valve with service life indicator.Scope of supply:fittings (PFA), blind fitting (PFA), air valve
b.safe Caps, GL 45, PPS, lateral connections
Screw caps, with flat, freely movable insert made of PTFE, for connecting capillary tubing (O.D. 3.2 mm) and a b.safe air valve with service life indicator. The connections are lateral, at a 90° angle to the bottle thread.Scope of supply:fittings (PFA), blind fitting (PFA), air valve
b.safe Caps, GL 45, PPS, preparative
Screw caps, with freely movable insert made of PTFE. With PFA fittings for capillaries with O.D. 3,2 mm (UNF 1/4"), PTFE fittings preparative for tubing with O.D. 6,35 mm (thread NPT 1/8"), and an air valve with service life indicator.Scope of supply:fitting (PFA, Ø 3,2 mm), fitting (PTFE, Ø 6,35 mm), blind fittings (PTFE), air valve
b.safe Caps, GL 45, PPS, with stopcocks
Screw caps, with freely movable insert made of PTFE, with female threads UNF ¼", for connecting capillary tubing (O.D. 3.2 mm) and a b.safe air valve with service life indicator. All capillary connectors with integrated stopcock and additional capillary connector on the bottom side of the lid.Scope of supply:connections with stopcocks, fittings top (PFA), fittings bottom (PFA), air valve
b.safe caps, GL45, PP/PPS, PFAS Analytic
Screw caps, with freely movable insert made of PP, with female threads UNF ¼" 28G, for connecting capillary tubing (O.D. 3.2 mm) and a b.safe air valve. Free from polyhaloolefins.Insert made of PPFittings made of PEIdeal for PFAS analysisDIN 38407-42 and DIN 38414-14 compliantEU Directive 202/2184 compliantScope of supply:Cap, fittings (PE), blind fittings (PE), air valve with service life indicator
b.safe caps, GLS 80, PP
Screw caps, with freely movable insert made of PTFE, with female threads UNF ¼", for connecting capillary tubing (O.D. 3.2 mm) and a b.safe air valve with service life indicator.Scope of supply:fittings (PFA), blind fittings (PFA), air valve
b.safe Caps, GPI 38/400, PPS
Screw caps, with freely movable insert made of PTFE, with female threads UNF ¼", for connecting capillary tubing (O.D. 3.2 mm) and a b.safe air valve with service life indicator.Scope of supply:fittings (PFA), blind fittings (PFA), air valve
b.safe Caps, GPI 38/430, PPS
Screw caps, with freely movable insert made of PTFE, with female threads UNF ¼", for connecting capillary tubing (O.D. 3.2 mm) and a b.safe air valve with service life indicator.Scope of supply:fittings (PFA), blind fittings (PFA), air valve
b.safe Caps, S 40, PPS
Screw cap with freely movable insert made of PTFE, with female threads UNF ¼", for connecting capillary tubing (O.D. 3.2 mm) or a b.safe air valve with service life indicator.Scope of supply:fittings (PFA), blind fittings (PFA), air valve
b.safe Caps, S 40, PPS, with stopcocks
Screw caps, with freely movable insert made of PTFE, with female threads UNF ¼", for connecting capillary tubing (O.D. 3.2 mm) and a b.safe air valve with service life indicator. All capillary connectors with integrated stopcock and additional capillary connector on the bottom side of the lid.Scope of supply:connection with stopcock, fitting top (PFA), fitting bottom (PFA), air valve
b.safe Caps, with ground joint, PTFE
Caps with ground joint cone NS 29/32, with female threads UNF ¼", for connecting capillary tubing (O.D. 3.2 mm) and a b.safe air valve with service life indicator.Scope of supply:fittings (PFA), blind fitting (PFA), air valve, locking nut (PP)
b.safe Waste Caps B 53, PE, with electronic fill level control
Screw cap with free movable insert made of PTFE. Depending on the version, for connecting capillaries (O.D. 1.6/2.2/3.2 mm) and hose olives for tubing with I.D. 5.5 to 8 mm. A b.safe exhaust air filter can be screwed into the thread GL 14 (not included in the scope of supply).The Waste Caps are supplied with a permanently mounted cable (400 mm length) to connect the b.safe display for level control. The red indicator pin on the Waste Caps enables visual monitoring of the fill level.Scope of supply: fittings (UNF 1/4“), blind fitting (UNF 1/4“), hose olive (NPT 1/8")
b.safe Waste Caps B 53, PE, with filling funnel
Screw caps with free movable insert made of PTFE. Depending on the version, for connecting capillaries (O.D. 1.6/2.2/3.2 mm) and hose olives for tubing with I.D. 5.5 to 8 mm. A b.safe exhaust air filter can be screwed into the thread GL 14 (not included in the scope of supply).The filling funnel made of PP has an integrated stopcock. The stopcock with grip is opened by turning the grip and the grip position shows if the stopcock is closed. The automatic stopcock is opened by pushing the grip and closes automatically if the grip is loosened.Scope of supply:Filling funnel (automatic stopcock/ with grip), fittings (UNF 1/4“), blind fitting (UNF 1/4“), hose olive (NPT 1/8")