Light syringe

Sampling Approximately 1 ml of headspace vapor drawn using a gas-light syringe and injected into a GL chromatograph... 

The pH 5.5 method To an activated sample (<10 xl), 3 ml of 10 mM sodium acetate buffer (pH 5.5), 5-10 mg of CTAB, 20 xl of 0.1 M FeS04, and 20 xl of 10% H2O2 are added in that order. The light emission is triggered when H2O2 is injected with a constant rate syringe (Hamilton CR-700-20). 

Turbidity measurements were determined using the dipping probe colorimeter. The light frequency was 650 nm. Deionized water transmittance was set at 90. The surfactant test solutions were stirred ( — 3500 rpm) and maintained at 75°C. Active surfactant concentration was 0.1% wt. Solution volume was 100 cm1. A 26.5% CaCU (95,699 ppm CaJ+) solution was added via syringe in 0,10 ml increments to the lower portion of the surfactant solution. 

P 32] Pyrene (20 mM), 1,4-dicyanobenzene (40 mM) and sodium cyanide (1 M) were reacted in propylene carbonate and water. A 100 pi solution of pyrene (20 mM), 1.4-dicyanobenzene (40 mM) in propylene carbonate and a 100 pi solution of sodium cyanide (1 M) in water were fed by programmable dual-syringe pumps via fused-silica capillary tubes into a micro-channel chip [29]. Both solutions were fed with equal flow velocity. A 300 W high-pressure mercury lamp was used as light source. After passing an optical filter made of a CUSO4 solution, the whole chip was irradiated after formation of a stable oil/water interface inside. The oil phase was collected at the exit. 

Reagents. n-butyl lithium (Koch-Light) was supplied as a solution in n-hexane (1.55 mol dm-J) and transferred to the reaction vessel via a suba-seal cap using a syringe. Chlorotrimethylsilane and trichloromethylsilane (Aldrich) were distilled under reduced pressure. Ammonia (BDH) was supplied as an "0.880" solution in water. 

Figure 1.3. Phase-modulation blood gas instrumentation based on a laser diode light source. Blood gas catheter (lop) direct reading blood gas syringe (bottom).

The apparatus consists of a light source which is placed next to a cell with thermostat. The oil phase is contained in the cell while the aqueous phase is filled in a syringe (with thermostat jacket) with diameters as ... 

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