1. Laboratory glassware is applied for working in acid and neutral substances at 1000^oC temperature
2. Tips are used for thermoelectric thermometers working at temperature up to 1000^oC and also for submergence of thermoelectric thermometer at measuring liquid steel temperature during not more than 20 seconds.
3. Products (except tips) are to be stable to crystallization at heating during 15 minutes at temperature of 1000+-20^oC with subsequent cooling at 20+-5^oC temperature
4. Products are thermally stable. At heating temperature of 800±20^оС (tips to temperature of 1000+-20^o) with subsequent cooling in water at temperature not more than 20+-5^oC products are not to give cracks and cuts after 20 heating shifts.

Crucible is made of the following types:
В — high
Н — low

Example: designation of crucible type B with 80 ml capacity volume
Crucible В-80 ГОСТ19908

Example: designation of 100 ml capacity volume bowl:
Bowl-100 ГОСТ 19908

Beaker is manufactured of the following types:
ВН — high with spout
ВБН -high without spout
НН — low with spout
НБН -low without spout

Example: designation of ВБН type 800 ml capacity volume beaker:
Beaker ВБН-800 ГОСТ 19908

Flask is made of the following types:
КД — round bottom with long neck
КК — round bottom with short neck
Гр — pear-shaped
П — flat bottom
Кн — сonic

Example: designation of 200 ml Кн type flask
Flask Кн-200 ГОСТ 19908

Example: designation of funnel with outer diameter of 45 mm:
Funnel: 45 ГОСТ 19908

Example: designation of 90 ml test tube
Test tube-90 ГОСТ 19908

Example: designation of 100 mm length tip:
Tip-100 ГОСТ 19908

Production sample