CG-1818

GAS EVOLUTION MEASUREMENT APPARATUS

Apparatus provides a convenient and accurate method for the determination of the concentration or purity of active metals and metal hydrides. Metals and metal hydrides that can be analyzed in this manner include borane-methyl sulfide complexes, borane tetrahydrofuran, sodium and lithium as dispersions in mineral oil, lithium aluminum hydride. These active metals and metal hydrides react rapidly and quantiatively with suitable hydrolytic solvents to produce hydrogen gas. Available in three capacities: 50ml, 250ml and 1000ml. All complete units supplied with a buret, a CG-3502-04, -10 to 260º thermometer, a CG-1042-01 24/40 thermometer adapter and a leveling bulb with a 24/40 top outer and a lower detachable hose connection. The leveling bulb capacity varies with the capacity of the buret and has a hose connection of 8mm O.D. Flexible tubing is not supplied with the apparatus.

Item Number	Item Description	PQ	Price	Qty Avail	Quantity
SKU: CG-1818-01	50mL Gas Evolution Measurement Apparatus	EACH	$937.25	Call for Availability	Qty:
SKU: CG-1818-02	250mL Gas Evolution Measurement Apparatus	EACH	$1,042.30	Call for Availability	Qty:
SKU: CG-1818-03	1000mL Gas Evolution Measurement Apparatus	EACH	$1,192.90	Call for Availability	Qty:

Replacement Parts
Specifications/Manuals
Suggested Products

Item Number	Item Description	PQ	PL	Price	Qty Avail	Quantity
SKU: CG-1818-20	Buret Only, 50mL Capacity	EACH		$800.20	7	Qty:
SKU: CG-1818-21	Buret Only, 250mL Capacity	EACH		$878.90	3	Qty:
SKU: CG-1818-23	Buret Only, 1000mL Capacity	EACH		$1,011.70	4	Qty:
SKU: CG-1818-30	500mL Leveling Bulb	EACH		$99.80	4	Qty:
SKU: CG-1818-32	1000mL Leveling Bulb	EACH		$124.20	3	Qty:
SKU: CG-198-01	Thread size: GL-14, Style: Bent, Hose OD (mm): 8.3, Hose ID (mm): 4, Length (mm): 40	EACH	✱	$4.05	312	Qty:
SKU: CG-198-02	Thread size: GL-14, Style: Straight, Hose OD (mm): 8.7, Hose ID (mm): 5, Length (mm): 25	EACH	✱	$5.00	301	Qty:
SKU: CG-1046-01	Adapter, Inlet, 24/40 Inner Joint, Hose Connection	EACH		$54.30	50	Qty:
SKU: CG-3503-12	Thermometer, Non-Mercury, Partial Immersion, -10°C to 260°C, 305mm OAL	EACH	✱	$31.00	32	Qty:
✱ Chemistry Equipment and Hardware Product line

To operate: Attach tubing from T-Bore stopcock to reaction. With both the T-Bore stopcock and upper valve open to the atmosphere, the leveling bulb is adjusted to give a zero reading for the level of distilled water in the gas buret. After the above process is complete, the T-Bore stopcock and the upper valve are turned so that the reaction and buret form a closed system. When the hydrolysis is complete, the water level in the capillary side tube will be at a level considerably below the water level in the buret. To obtain an accurate reading, the level in the buret must be equal to that in the capillary side tube. This is accomplished by rapidly lowering the leveling bulb to a point below the connection to the reaction and raising the bulb to its original position. This process is repeated until the level of water in the buret, leveling bulb and side tube are all equal. A final reading can now be taken from the calibrations on the buret.

Design Suggested By: Dr. Ron Najafi NovaCal Pharmaceuticals Emeryville, CA

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