Septum caps for 5 mm NMR tubes
The septum caps are available with slotted or unslotted septum. This allows the addition of substances into the closed tube for titration experiments without having to open the tube.
Set for continuous level control
For permanent level measurement. The signal box offers 4 freely configurable outputs for controlling external devices. The compact design and independent mains supply allow easy handling and installation even outside control cabinets.Automatic warning for 5 different levels freely selectableAccuracy of up to ± 0.5 mmProbe head: stainless steel 303/316LProbe tube: stainless steel 1.4571Probe length: 265 mmProbe tube Ø: 6 mmProtection class IP68Scope of supply: Signalbox UM-O-Ex with display unit, stainless steel sensor probe, cable with open ends, level sensor TORRIX Ex 6 B NT for Bypass without HART
Shell Vials Teteseal®, with cap
White polyethylene plug style needle closures, unattachedManufactured from expansion borosilicate N51A glass conforming to USP Type I and ASTM E438, Type I, Class B requirements
Signal lamps for level control
Visual signal when the level is reachedWith magnetic holderCable length 3 m
Signalbox T5
LED's and acoustic alarm warn before the level of collection containers reaches the critical level. With mute / snooze function and interface for controlling external devices such as pumps or valves. For SCAT sensors and Safety Waste Caps with electronic level control.LED display5 sensor inputs and 6 potential-free outputsOperating temerature: 5 to 40 °C
SIL G unmodified standard silica layers for TLC, glass plates/ POLYGRAM®
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 reagentsGlass plates, POLYGRAM®, ALUGRAM®Silica 60Specific surface (BET) ~500 m²/gMean pore size 60 ÅSpecific pore volume 0.75 ml/gParticle size 5 to 17 µmStandard gradeThickness of layer for analytical plates 0.25 mm, for preparative plates 0.5 and 1 mmFor 2 mm preparative layers a slightly coarser material is used, indicators: manganese activated zinc silicate with green fluorescence for short-wave UV (254 nm)Binders: highly polymeric products, which are stable in almost all organic solvents and resistant towards aggressive visualisation reagentsBinder system for Polygram® sheets is also completely stable in purely aqueous eluentsAvailable as glass plates, Polygram polyester sheets and Alugram aluminium sheetsAvailable with or without fluorescent indicator (UV 254)
Silgur unmodified standard silica layers with concentrating zone
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 reagentsGlass platessilica 60, specific surface (BET) ~ 500m2/g, mean pore size 60Ä, specific pore volume 0.75ml/g, particle size 5.17µmkieselguhr zone for rapid sample application: because kieselguhr is completely inert towards a large number of compounds, the samples always from a narrow band at the interface of the two adsorbents, irrespective of shape, size or position of the spots in the concentrating zone. Separation then takes place inthe silica layer.available as glass plates with or without fluorescent indicator (UV254)
Silica adsorbents for low pressure column chromatography
Standard silica 60, pore size ~ 60 Å; pore volume ~ 0.75ml/g; spec. surface BET ~ 500m²/g. highly porous, amorphous silicic acid in the form of hard, opalescent particles, prepared by precipitation of water glass with sulphuric acid. Silica FIA for the fluorescence indicator adsorption procedure for the determination of hydrocarbon groups in the testing of liquid fuels in accordance with DIN 51791 and ASTM D 1319-58T. The FIA method determines saturated hydrocarbons, olefins and aromatic hydrocarbons of a sample chromatographically by adsorption and desorption in a column filled with FIA silica, in the presence of a fluorescent dye mixture. Further silica adsorbentson request.
Silylation 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 silylation?Test kit for determination of the optimum silylation.
Silylation reagents - BSTFA, SILYL-991
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.N,O-bis-trimethylsilyl-trifluoroacetamidem.w. 257.4, Bp 40°C (12mm Hg), density d20°/4° = 0.961BSTFA: R = CF3 powerful trimethylsilyl donor with approximately the same donor strength as the non-fluorinated analogue BSAadvantage of BSTFA over BSA: greater volatility of its reaction products (particularly useful for GC of some lower boiling TMS amino acids.BSTFA is nonpolar (less polar than MSTFA), and can be mixed with acetonitrile for improved solubility. For silylating fatty acid amides, hindered hydroxyls and other compounds, which are difficult to silylate (like secondary alcohols and amines), we recommend BSTFA + 1% trimethylchlorosilane (TMCS), available under the designation SILYL-991.Due to their purpose, derivatisation reagents are very reactive substances. For this reason they should be stored cool and protected from moisture.The derivatisation reagents are supplied in vials with crimp caps for easy access with a syringe. Vials with pierced sealing disks have limited stability and should be used immediately.
Silylation reagents - MSTFA
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.N-methyl-N-trimethylsilyl-trifluoroacetamidem.w. 199.1, Bp 70 °C (75 mm Hg), density d20°/4° = 1.11MSTFA: R' = CF3, R" = CH3The most volatile trimethylsilyl amide available.Very strong TMS donor which does not cause any noticeable fouling of the FID burning chamber even after long-time measuring series.The already good solution characteristics can be improved by addition of submolar quantities of protic solvents (e.g. TFA for extremely polar compounds such as hydrochlorides) or pyridine (e.g. for carbohydrates).Due to their purpose, derivatisation reagents are very reactive substances. For this reason they should be stored cool and protected from moisture.The derivatisation reagents are supplied in vials with crimp caps for easy access with a syringe. Vials with pierced sealing disks have limited stability and should be used soon.
Simultan separating chamber
For all TLC plates up to 200 x 200 mm. Flat chamber floor with vertical grooves for up to 5 TLC plates.
Single use needles Sterican®, chromium-nickel steel, blood sampling
Thin-walled needlesMade of stainless, chromium-nickel steelSmooth surface with light silicone coatingTransparent Luer-Lock plastic hub made of PolypropyleneColour-coded hub conforms to ISO 6009Triple facet cut
Single use needles Sterican®, chromium-nickel steel, blood sampling/ phlebotomy
Thin-walled needlesMade of stainless, chromium-nickel steelSmooth surface with light silicone coatingTransparent Luer-Lock plastic hub made of PolypropyleneColour-coded hub conforms to ISO 6009Triple facet cut
Single use needles Sterican®, chromium-nickel steel, dental area
Thin-walled needlesMade of stainless, chromium-nickel steelSmooth surface with light silicone coatingTransparent Luer-Lock plastic hub made of PolypropyleneColour-coded hub conforms to ISO 6009Blunt 90°
Single use needles Sterican®, chromium-nickel steel, pharmaceutical preparation
Thin-walled needlesMade of stainless, chromium-nickel steelSmooth surface with light silicone coatingTransparent Luer-Lock plastic hub made of PolypropyleneColour-coded hub conforms to ISO 6009Thin-walled needlesMade of stainless, chromium-nickel steelSmooth surface with light silicone coatingTransparent Luer-Lock plastic hub made of PolypropyleneColour-coded hub conforms to ISO 6009
Single-use hypodermic needles, Sterican®
In accordance with ISO 7864 and DIN 13097Thin-walled needlesMade of stainless, chromium-nickel steelSmooth surface with light silicone coatingMinimal pain upon punctureTransparent Luer-Lock plastic hubMade of Polypropylene (needle hub)Box of 100 pieces
Single-Use Needles Sterican®, chromium-nickel steel, heparin/ tuberculin
Thin-walled needlesMade of stainless, chromium-nickel steelSmooth surface with light silicone coatingTransparent Luer-Lock plastic hub made of PolypropyleneColour-coded hub conforms to ISO 6009Triple facet cut
Snap ring vials N11
Snap ring / crimp neck vials N11 may be sealed either with a snap ring closure N11 or a crimp closure N11.
SOL-M™ disposable syringes with catheter tip
Highly transparent barrelHigh contrast blue graduationVariant with Luer adapter and aspiration handlePiston with double sealing ring for slow aspiration and injectionWith a central catheter hubPolypropylene syringe barrel and syringe plungerPiston plug made of synthetic rubber with double sealing ringLatex-freeSterile, single packed
SPE columns, CHROMABOND PFAS
Special phase for SPE analysis. For enrichment of PFAS from water, textiles and sediments (contaminated soils). Polymeric combination phase with weak anion exchanger, highly porous, spherical particles.