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.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.Hazardous Substance DataGHSSignal wordAchtungH-SatzH226, H315, H319P-SatzP210, P280shUNNR3316SDSLink

100% dimethylpolysiloxanenonpolar 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.For columns with 0.25 to 0.32mm ID and films

5% phenyl - 95% dimethylpolysiloxane USP G27, G36 nonpaolar standard phase with large range of application similar phases: Permabond® SE-52 , SE-54, SE-52, DB-5, HP-5, SPB-5, CP-Sil 8, Rtx-5, 007-5, BP5, MDN-5, AT-5, ZB-5 for columns with 0.1 to 0.32mm ID and films

50% cyanopropylmethyl - 50% phenylmethylpolysiloxaneUSP G7 / G19middle polar phaserecommended for fatty acid analysessimilar phases: DB-225, HP-225, OV-225, Rtx-225, CP-Sil 43, 007-225, BP225max. temperature for isothermal operation: 260°C, max. temperature for short isotherms in a temperature programme: 280°CCustom-made columns to your specifications available on request.Each column is individually tested and supplied with test certificate and test chromatogram, but without fittings or ferrules.Column ends are melted or closed with septa. Additionally, we supply the corresponding test mixture with each column.

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. 94.06For 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. 94.06Hazardous Substance DataGHSSignal wordGefahrH-SatzH225, H301, H311, H331, H370P-SatzP210, P233, P260sh, P261sh, P280sh, P301+P310, P302+P352, P304+P340, P311, P312, P403+P233, P405UNNR3316SDSLink

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.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.Hazardous Substance DataGHSSignal wordAchtungH-SatzH226, H302, H315, H319P-SatzP210, P264W, P280sh, P301+P312, P330SDSLink

5% diphenyl - 95% dimethylpolysiloxanenonpolar phase with low bleeding, deal for GC/MS and ECD applications and general analyses at trace level perfect inertness for basic compounds.Similar phases: DB-5 MS, HP-5 MS, Ultra-2, Equity-5, CP-Sil 8 CB low bleed/MS, Rtx-5SIL-MS, Rtx-5 MS, 007-5 MS, BPX5, MDN-5S, AT-5 MS, VF-5 MS.max. temperature for isothermal operation: 340°C, max. temperature for short isotherms in a temperature programme: 360 °CCustom-made columns to your specifications available on request.Each column is individually tested and supplied with test certificate and test chromatogram, but without fittings or ferrules. Column ends are melted or closed with septa, and thus protected from atmospheric oxygen.Additionally, we supply the corresponding test mixture with each column.

6% cyanopropyl-phenyl - 94% dimethylpolysiloxaneUSP G43medium polar phaserecommended for environmental analysessimilar phases: HP-624, HP-VOC, DB-624, DB-VRX, SPB-624, CP-624, Rtx-624, Rtx-Volatiles, 007-624, BP624, VOCOLmax. temperature for isothermal operation: 280°C, max. temperature for short isotherms in a temperature programme: 300°CCustom-made columns to your specifications avaialble on request.Each column is individually tested and supplied with test certificate and test chromatogram, but without fittings or ferrules.Column ends are melted or closed with septa. Additionally, we supply the corresponding test mixture with each column.

cyclodextrin derivatives with high melting point:for GC-enantiomer separation diluted with polysiloxanesHeptakis-(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.Max. temperature for isothermal operation: 220°CMax. temperature for short isotherms in a temperature programme: 240°C

especially deactivated for the analysis of polyfunctional amines such as ethanolamines, amino-functionalised diols and similar compounds, which are important base materials in industrial chemistry, and shows strong tailing on standard-deactivated columns; similar phases: Rtx-5 Amine, PTA-5; USP G27 / G36; improved linearity for analyses of active components at trace levels: no amine absorptions even for aliphatic and aromatic amines at concentrations of 100 pg/peak; tested with the Optima® Amine test mixture, which among others also contains diethanolamine and propanol-pyridine (this test mixture is supplied with each column). Max. temperature for isothermal operation: 300°C, max. temperature for short isotherms in a temperature programme: 320°C.

cyclodextrin derivatives with high melting point:for GC-enantiomer separation diluted with polysiloxanesHeptakis-(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.Max. temperature for isothermal operation: 230°CMax. temperature for short isotherms in a temperature programme: 250°C

LIPODEX® cyclodextrin phase for enantiomer separationbase 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)LIPODEX® E is suitable for a broad application range.Octakis-(2,6-di-O-pentyl-3-O-butyryl)-γ-cyclodextrin. Recommended for α-amino acids, α- and β-hydroxycarboxylic acid esters, alcohols (TFA), diols (TFA), ketones, pheromones (cyclic acetals), amines, alkyl halides, lactones.Max. temperature for isothermal operation: 200°CMax. temperature for short isotherms in a temperature programme: 220°C

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.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.Hazardous Substance DataGHSSignal wordGefahrH-SatzH225, H226, H302, H315, H319, H335, H360P-SatzP201, P210, P233, P261sh, P264W, P280sh, P301+P312, P308+P313, P330, P403+P233, P405SDSLink

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.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.Hazardous Substance DataGHSSignal wordGefahrH-SatzH225, H301, H302, H311, H315, H319, H331, H335, H370P-SatzP260sh, P280sh, P302+P352, P311, P405SDSLink

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 acylation?Test kit for determination of the optimum acylation.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 acylation?Test kit for determination of the optimum acylation.Hazardous Substance DataGHSSignal wordGefahrH-SatzEUH014, H226, H302, H314, H314US, H315, H319, H332, H412P-SatzP260D, P280sh, P303+P361+P353, P305+P351+P338, P501, P260sh, P310SDSLink

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.Acylation with fluorinated acid amides is recommended for alcohols, primary and secondary amines as well as for thiols under mild, neutral conditions. MBTFA also forms very volatile derivatives with carbohydrates.by-products: corresponding neutral acylamides, which can be easily removed due to their high volatility; because of neutral conditions and favourable chromatographic properties often removal of the bisacylamide is not necessary. Thus sample preparation is much more convenient.MBTFA / MBHFBAN-methyl-bis(trifluoroacetamide) MBTFAm.w. 223.08, Bp 123 - 124°C (760mm Hg), density d20°/4° = 1.55,CF3 - CO - N(CH3) - CO - CF3Due 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.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.Acylation with fluorinated acid amides is recommended for alcohols, primary and secondary amines as well as for thiols under mild, neutral conditions. MBTFA also forms very volatile derivatives with carbohydrates.by-products: corresponding neutral acylamides, which can be easily removed due to their high volatility; because of neutral conditions and favourable chromatographic properties often removal of the bisacylamide is not necessary. Thus sample preparation is much more convenient.MBTFA / MBHFBAN-methyl-bis(trifluoroacetamide) MBTFAm.w. 223.08, Bp 123 - 124°C (760mm Hg), density d20°/4° = 1.55,CF3 - CO - N(CH3) - CO - CF3Due 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.Hazardous Substance DataGHSSignal wordGefahrH-SatzH226, H302, H314US, H315, H319P-SatzP260D, P280sh, P303+P361+P353, P305+P351+P338, P501SDSLink

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.Acylation with fluorinated acid anhydrides can be used for alcohols, phenols, carboxylic acids, amines, amino acids and steroids forming volatile, stable derivatives suited for FID as well as for ECD detection.by-products of acylation with anhydrides: corresponding acidsexcess reagent and the acid formed have to be removedHeptafluorobutyric acid anhydride (HFBA)m.w. 410.06, Bp 106 - 107°C (760mm Hg),C3F7 - CO - O - CO - C3F7density d20°/4° = 1.665For 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.Acylation with fluorinated acid anhydrides can be used for alcohols, phenols, carboxylic acids, amines, amino acids and steroids forming volatile, stable derivatives suited for FID as well as for ECD detection.by-products of acylation with anhydrides: corresponding acidsexcess reagent and the acid formed have to be removedHeptafluorobutyric acid anhydride (HFBA)m.w. 410.06, Bp 106 - 107°C (760mm Hg),C3F7 - CO - O - CO - C3F7density d20°/4° = 1.665Hazardous Substance DataGHSSignal wordGefahrH-SatzH314P-SatzP260sh, P280sh, P303+P361+P353, P305+P351+P338, P310SDSLink

phenylmethylpolysiloxane (50 % phenyl)medium polar phasepreferred applications: steroids, pesticides, drug analysesUSP G3similar phases: OV-17, DB-17, HP50+, HP17, SPB-50, SP-2250, Rtx-50, CP-Sil 24 CB, 007-17, ZB50 max. temperature for isothermal operation: 320°C, max. temperature for short isotherms in a temperature programme: 340°C, for 0.53mm ID columns the max. temperatures are 300 and 320°C, resp.In addition to this standard programme we will be happy to supply columns custom-made to your specifications.

Beschichtete Schläuche aus Quarzglas für GC-Kapillaranwendungen.Hohe HomogenitätChemisch inertStandard-Polyimid-Temperaturbeständigkeit bis 380 °CPolyimid-Beschichtung ist chemisch beständigNiedrige Dielektrizitätskonstante, geringer dielektrischer VerlustUndurchlässig für alle Gase (außer H2, He)Frei von thermischer HystereseHohe intrinsische ZugfestigkeitSehr geringe thermische AusdehnungDie Verwendung mit Flusssäure, Phosphorsäure, Alkalien und alkalimetallhaltigen Verbindungen ist zu vermeiden, da es zur Auflösung von Quarzglas und zur Entglasung der Oberfläche kommen kann.

Syringes for CTC Analytics CombiPal and GC PAL. High reproducibility, low carry-over.

GC syringes for all Perkin-Elmer autosampler e.g. Clarus. High reproducibility, low carry-over.

GC syringes for Agilent autosampler 7673, 7683 and 6850With fixed or removable needleTwo different needle diameter and tapered needlesHigh reproducibility, low carry-over

Syringes for CTC Analytics CombiPal and GC PAL.High reproducibility, low carry-overFor Thermo TriPlus

Beschichtete Schläuche aus Quarzglas für GC-Kapillaranwendungen.Hohe HomogenitätChemisch inertStandard-Polyimid-Temperaturbeständigkeit bis 380 °CPolyimid-Beschichtung ist chemisch beständigNiedrige Dielektrizitätskonstante, geringer dielektrischer VerlustUndurchlässig für alle Gase (außer H2, He)Frei von thermischer HystereseHohe intrinsische ZugfestigkeitSehr geringe thermische AusdehnungDie Verwendung mit Flusssäure, Phosphorsäure, Alkalien und alkalimetallhaltigen Verbindungen ist zu vermeiden, da es zur Auflösung von Quarzglas und zur Entglasung der Oberfläche kommen kann.