A precision-engineered double-layer constant pressure dropping funnel, designed for controlled liquid addition in labs. Manufactured from high-quality borosilicate glass for excellent thermal and chemical resistance. 

✔ Double-Layer Structure – Provides enhanced thermal insulation or temperature control. 

✔ Constant Pressure Design – Ensures stable liquid addition under pressure. 

✔ Graduated Scale – Facilitates accurate liquid volume reading. 

✔ Borosilicate Glass – Offers excellent thermal shock and chemical resistance. 

✔ Stopcock Control – Allows precise regulation of liquid flow.