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Analytical measurement and testing

Chromatography

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Vacuum technology, drying, dry storage

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Acylation kit | Content: 2 x 1 ml each for MBTFA , TFAA, MBHFBA
Acylation kit | Content: 2 x 1 ml each for MBTFA , TFAA, MBHFBA
Brand: Macherey-Nagel GmbH & Co. KGWhich is the proper reagent for acylation?Test kit for determination of the optimum acylation.
€159,00
Acylation reagents for GC - Anhydrides | Description: HFBA, Capacity ml: 10
Acylation reagents for GC - Anhydrides | Description: HFBA, Capacity ml: 10
Brand: Macherey-Nagel GmbH & Co. KGAvailable in 3 variantsAcylation 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° = 1.665
€138,00
Acylation reagents for GC - Bisacylamides | Description: MBTFA, Capacity ml: 1
Acylation reagents for GC - Bisacylamides | Description: MBTFA, Capacity ml: 1
Brand: Macherey-Nagel GmbH & Co. KGAvailable in 3 variantsAcylation 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 - CF3
€353,00
ADAMANT unmodified standard silica layers for TLC | Type: ADAMANT UV254, Plate format cm: 5 x 20, Gel thickness mm: 0.25
ADAMANT unmodified standard silica layers for TLC | Type: ADAMANT UV254, Plate format cm: 5 x 20, Gel thickness mm: 0.25
Brand: Macherey-Nagel GmbH & Co. KGAvailable in 11 variantsSilica 60, specific surface (BET) ~ 500m²/g, mean pore size 60Å, specific pore volume 0.75ml/g, particle size 5 to 17µm. Outstanding hardness and abrasion resistance due to an optimized binder system. Increased separation efficiency due to an optimized particle size distirbution. High suitability for trace analyses resulting from a UV indicator with brilliance and a low-noise background of the layer.Available as glass plates with or without fluorescent indicator (UV254).
€230,00
Adapter for exhaust filter, PP | Version: Angle 45°, Thread: GL 14
Adapter for exhaust filter, PP | Version: Angle 45°, Thread: GL 14
Brand: Bohlender GmbHAvailable in 4 variantsFor space saving mounting on b.safe Waste Caps.
€47,95
Adapter for Safety Waste Caps V3.0, electrostatic conductive | Thread: GL 25
Adapter for Safety Waste Caps V3.0, electrostatic conductive | Thread: GL 25
Brand: SCAT Europe GmbHExtension GL25 connection.
€69,90
Adapters for capillary connections, PP | Thread outside: UNF 1/4", Thread inside: GL 14
Adapters for capillary connections, PP | Thread outside: UNF 1/4", Thread inside: GL 14
Brand: Bohlender GmbHFor assembly of an exhaust filter on a capillary connection.
€19,40
Adapters for CHROMABOND® columns | For: Polypropylene columns (30 and 70 ml), Material: PP
Adapters for CHROMABOND® columns | For: Polypropylene columns (30 and 70 ml), Material: PP
Brand: Macherey-Nagel GmbH & Co. KGAvailable in 4 variants
€27,90
Adapters for exhaust filter connection | Thread outside: GL 14, Thread inside: UNF 1/4", Material: PE-EX
Adapters for exhaust filter connection | Thread outside: GL 14, Thread inside: UNF 1/4", Material: PE-EX
Brand: Bohlender GmbHAvailable in 2 variantsFor installation of capillaries at exhaust filter connection of b.safe Waste Caps. The adapter made of PE-EX is conductive.
€30,88
Adapters for exhaust filters | Description: 90°-Adapter for angled connection
Adapters for exhaust filters | Description: 90°-Adapter for angled connection
Brand: SCAT Europe GmbHAvailable in 3 variantsSpace problems in the lab? Use the adapters for the exhaust filter to gain more free space. Attach the exhaust filter in any position - perfect when dealing with lower installation heights.
€49,90
Air valves for Eluent SafetyCaps | Life time: 6 months
Air valves for Eluent SafetyCaps | Life time: 6 months
Brand: KEFO d.o.o.Available in 3 variantsAir valves prevent the formation of vacuum in HPLC bottles.PTFE membrane1/4"-28 thread portWith timestrip sticker
€153,01
Air valves Generation 2.0 for SafetyCaps | Type: Air valves 2.0 (refill pack of 10), Flow rate amount ml/min: 400
Air valves Generation 2.0 for SafetyCaps | Type: Air valves 2.0 (refill pack of 10), Flow rate amount ml/min: 400
Brand: SCAT Europe GmbHAvailable in 4 variantsThread size UNF 1/4" 28GLuer Lock adapterPTFE FilterValve membrane blocks vapours and opens at negative pressureIt is recommended to replace the valve every 6 monthsWith change indicator and labelling field for timely change
€224,00
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