Rapid, simple and inexpensive technique for combustion analysis of organic materials in oxygen atmosphere
For determination of sulfur, halogens, phosphorus, traces of metals, etc., in organic substances by combustion in oxygen
Complies with ASTM Standard E 205
Procedure converts organic materials into soluble combustion products, which are then analyzed for chlorine, bromine, iodine, fluorine and sulfur by inorganic, gravimetric or volumetric methods. Combustion products are free from metallic contaminants. Heavy-wall conical flask, of borosilicate glass, has deep, bell-shaped, flaring lip. Elongated ground glass stopper has attached U-shape platinum wire gauze sample carrier. Specially cut, unsized paper sheets serve as low ash wrappers for the sample (see Thomas number 6513C75). Flasks have
34/28 stopper with sealed-in platinum sample carrier and are furnished with pack of 100 sample wrappers. Model 6513C20 includes 6513C45 Flask and 6513C60 Stopper. Model 6513C30 includes 6513C50 Flask and 6513C65 Stopper.
Replacement Flasks
Conical, of heavy-wall borosilicate glass
All sizes have
34/28 ground joints and bell-shape lip 65 mm wide x 30 mm deep. 500 mL flask is 195 mm high: 1,000 mL flask, 230 mm. Without stopper or platinum carrier.
Flask Stoppers with Platinum Sample Carriers
6513C55 Stopper complies with ASTM E 205 for 500 mL combustion flasks; glass tip extends 40 mm below ground joint
6513C60 Stopper was traditionally offered by Thomas for 300/500 mL combustion flasks; glass tip extends 50 mm below ground joint
6513C65 Stopper is used for 1,000 mL combustion flasks; glass tip extends 90 mm below ground joint
All feature U-shaped platinum gauze with 3 mm opening for insertion of the sample wrapper. For replacement Platinum Carrier, see Thomas number 6514F55.
Platinum Sample Carriers, Schoniger
22- or 18-gage platinum wire gauze
U-Shaped
Carrier is 12 x 12 mm with a 3 mm space between sides. The 20-gage wire stem forms into loop for hanging on stopper hook in Thomas-Schoniger flask.
Heavy-gage sample carrier is similar to 1233S50 Sample Carrier but with heavier 18-gage wire.