Import Flasks Round Bottom 5ml To 5000ml — Buy in Bulk from Supplier in India

J-sil Trading Corporation supplies round bottom flasks in capacities ranging from 5ml to 5000ml, with standard neck lengths classified as short or medium to ensure compatibility with common lab clamps and stoppers. Each flask is constructed from borosilicate glass with a thermal shock resistance of at least 150°C, and features interchangeable ground glass joints conforming to ISO 3837 standards. The flasks are designed for use in distillation, reflux, and vacuum applications where uniform heat distribution is critical.

The borosilicate glass used is typically Grade 3.3, which provides resistance to most acids, alkalis, and organic solvents. Wall thickness varies by volume: flasks under 100ml have thinner walls for sensitivity, while those above 1000ml are reinforced to handle pressure differentials. Joint sizes follow standard taper codes such as 14/20, 19/22, and 29/32, matching common glassware systems. These flasks are not autoclavable above 121°C without prior annealing, and should not be used for strong fluorides or hot concentrated phosphoric acid.

These flasks are commonly purchased by pharmaceutical R&D labs, university chemistry departments, and small-scale chemical manufacturers in Southeast Asia and Africa. Buyers typically order in batches of 50 to 500 units, packed in single-layer cardboard boxes with internal foam dividers. Trade terms are commonly FOB Nhava Sheva Port, with payment via T/T. Lead times are 15 to 25 days after order confirmation. Buyers should request a certificate of conformity for each batch to verify glass composition and joint tolerances.

J-sil Trading Corporation is an India-based exporter of laboratory glassware, operating from a warehouse facility in Gujarat. The company is listed as an imported supplier with harbor-tier trust verification, indicating it has completed basic documentation and shipment history checks. There is no public data on manufacturing capacity, years in operation, or employee count. The supplier does not claim in-house production and sources flasks from certified Indian glass manufacturers.

The listing does not indicate direct factory ownership, ISO certification, or lab testing reports. Response metrics show no history of buyer inquiries, suggesting limited engagement on the platform. Buyers should treat this supplier as a distributor and request batch-specific test certificates before large orders. No client names or export destinations are disclosed.