Dropping Funnel, Pear Shape, PTFE Stopcock


In stock


Complies with DIN 4800 StandardsBoro 3.3 or Borosilicate 3.3 is a type of glass having very low coefficient of thermal expansion

white ceramic colours used for white printing on glassware's. white ceramic colours are cured at high temperature & are durable, permanent, excellent weatherability, surface hardness and chemical resistance.




Borosilicate glass 3.3 is highly resistant to water effects, neutral and acid solutions, heavy acids and their mixtures, to chlorine, bromine, iodine and organic compounds. Even in long-term effects and at temperatures above 100 °C, this glass outstrips with its chemical durability most metals and other raw materials. Class of Resistance to Acid Effects (ISO 1776 a DIN 12116) is Class S1.

PTFE Stopcocks regulate the flow of liquids or low pressure gases & serve many functions in the laboratory & has the distinct advantages over glass for use with high vacuum & being much easier to clean due to grease free operation. For liquid applications, it also means that you won't contaminate your reaction mixture with grease. PTFE keys are interchangeable and replaceable so that there is no need for “matching the pairs” during cleaning.

With Cone and socket




Item Code:171.202.01, Capacity (ml):50, N/S :14/23, Bore (mm):2.5, Stopcock Type:PTFE, Pack of:1 | Item Code:171.202.02A, Capacity (ml):100, N/S:14/23, Bore (mm):2.5, Stopcock Type:PTFE, Pack of:1 | Item Code:171.202.04A, Capacity (ml):250, N/S:29/32, Bore (mm):4, Stopcock Type:PTFE, Pack of:1 | Item Code:171.202.05A, Capacity (ml):500, N/S:29/32, Bore (mm):4, Stopcock Type:PTFE, Pack of:1

Item Code Capacity (ml) N/S Bore (mm) Stopcock Type Pack of Price / pack
Qty Buy
171.202.015014/232.5PTFE1 2095
171.202.02A10014/232.5PTFE1 2305
171.202.04A25029/324PTFE1 2445
171.202.05A50029/324PTFE1 2930
  • Made from DIN ISO 3585, BORO 3.3 GLASS
  • With Drip Stem
  • Available with stem inside cone
  • Complies with DIN 4800 Standards
  • With PTFE stopcock