Catalogs >
Thermo Scientific >
Thermo Scientific GasBench II

Thermo Scientific GasBench II
1 / 8Pages

Catalog excerpts

MASS SPECTROMETRY Produ c t Spe ci f i cat i ons Thermo Scientific GasBench II Universal On-Line Gas Preparation and Introduction System for Isotope Ratio MS The Thermo Scientific GasBench II is an innovative solution for high precision on-line isotope and molecular ratio determination of headspace samples, including water equilibration, carbonates, and atmospheric gases (e.g. CO2, O2/N2). The precision and accuracy of the dual viscous flow inlet system are achieved using modern “continuous flow” techniques. The GasBench II is not only an alternative to dual inlet system techniques but it significantly extends the practice of isotope ratio mass spectrometry (IRMS). • Multiple loop injection leads to high precision • GC separation delivers pure analyte from gas mixtures • Automation leads to high sample throughput • Automatic range recognition and autodilution leads to the largest dynamic range of sample size • High sensitivity results in low sample consumption • Extreme flexibility leads to very hig

Open the catalog to page 1

GasBench II Applications H2/H2O and CO2/H2O Equilibration for δD and δ18O Determination of Water The measurement of the D/H and 18O/16O ratios of water is one of the most important applications of isotope ratio mass spectrometry. There is a very diverse range of applications ranging from studies of variations in natural isotope abundance in the hydrologic cycle, to authenticity control on beverages, to metabolic studies using D- or 18O-enriched tracers in humans and animals. This extreme range of sample types demands a flexible general purpose analytical solution, which can provide high...

Open the catalog to page 2

δ18O and δ13C Determination of Carbonates For more than 50 years, δ18O and δ13C measurements of carbonates have been one of the major applications of stable isotopes. The analysis of foraminifera, in particular, is one of the most demanding applications, requiring both high precision and high throughput. The Carbonate Reaction Kit The GasBench II in carbonate mode uses the principle of individual acid baths using a fully automated acid dosing system. The carbonate option contains a microliter pump that allows injection of anhydrous phosphoric acid (103%) into the sample vials. The double...

Open the catalog to page 3

Technical Details The GasBench II consists of a user programmable autosampler (1), a gas sampling system (2), a maintenance-free water removal system (3), a loop injection system (4), an isothermal gas chromatograph (GC) (5), an active open split interface (6), a reference gas injection system with three reference ports (7), and one or two optional LN2 traps for cryofocusing. The autosampler can be equipped with a variety of sample trays. A precisely thermostated sample tray is used for carbonates and water equilibration. The gas sampling system includes a two port needle which adds a...

Open the catalog to page 4

GasBench II Options • Carbonate reaction kit: The carbonate option contains a microliterpump that allows injection of anhydrous phosphoric acid (103%) into the sample vials and a dual needle array for dosing and sampling • Autosampler extensions The GasBench II autosampler can be extended to automate a second peripheral device, including the TC/EA, EA, H/Device, and PreCon. • 96 Sample tray (ambient temperature) • 96 Sample tray (temperature controlled) • Single cryotrap: Trapping option with a single fused silica trap for sub ambient gas concentration (e.g. 100 ppm CO2) • Dual cryotrap...

Open the catalog to page 5

Thermo Scientific Isodat Software Suite The Isodat software suite is the software suite for system control, data acquisition and data evaluation. The advantage that the Isodat software suite offers for GasBench II applications include: • Easy and fast method and sequence setup for IRMS, GasBench II preparation and acquisition modes. • User defined ion correction formulas can be registered in the Isodat software suite using the Isodat Script Language (ISL). • Complete control and automation of all interface functions for sample preparation and data acquisition. • Full access to all raw data...

Open the catalog to page 6

Analytical Performance For Thermo Scientific DELTA Series or MAT 253 Mass Spectrometers THERMO SCIENTIFIC GASBENCH II BASIC PERFORMANCE 10 pulses of reference gas (amplitude 3V, H2 5V), δ notation An ion current range of 2 – 20 nA (0.6 – 6 V) is equivalent to 1.2 μg – 12 μg carbon equivalent in the headspace of a 12 mL vial EXTERNAL PRECISION OF ISOTOPE RATIOS C, O, H, USING THE THERMO SCIENTIFIC GASBENCH II WITH 12 ML VIALS (N = 5), δ NOTATION Water equilibration (versus V-SMOW & SLAP)(1) V-SMOW & SLAP scaling: Based on IAEA recommendations all 18O and D analysis need to be based on V-SMOW...

Open the catalog to page 7

Installation Requirement GasBench II Footprint and Dimensions Produ c t Spe ci f i cat i ons Power 230 V single phase, 8 A Gases • He, better 99.999% • CO2, better 99.995% • H2, better 99.999% • 0.3% - 1% CO2, (99.995%) in He (99.999%) for 18O water equilibration • 1.0% - 2.0% H2 (99.999%) in He (99.999%) for 2H water equilibration Weight • GasBench II: 14 kg • Heated tray, GC pal, and baseplate: 43 kg Optional Items • PoraPLOT Q capillary column for separation of N2 and CO2 (included in the standard GasBench II system) • Carbonate kit with dual needle support, acid pump and needle,...

Open the catalog to page 8

Thermo Scientific GasBench II 1 / 8Pages

Catalog excerpts

All Thermo Scientific catalogs and technical brochures

Thermo Scientific GasBench II
1 / 8Pages