GB/T 35599-2017Laboratory glass and glassware outward defect terms (English PDF)

2.1 Bubble

Glass gas inclusions and gas-filled holes, there are round, oval, linear, punctate and other bubbles and thin skin bubble and broken skin bubble.

2.2 Striped cord; streak; ream; string

Glass in the glass texture, a single stripe, chaos stripes and spiral pattern.

2.3 Knot

Glassy glassy solid inclusions. Due to uneven mixing of glass batch or incomplete melting and other reasons exist in the glass

The main glass chemical composition of different points or block glass.

2.4 Stone

Glass opaque solid inclusions, with compound stones, refractory stones and crystal stones.

2.5 Iron filings

Iron particles attached to the glass.

2.6 Rust

Glass surface rubbed with iron and contaminated red, yellow or brown marks.

2.7 Glass wire spunglass

Products in the molding operation, the glass wall or bottom surface of the left pick when the tail of the glass.

2.8 Mold printing moldmark

Due to the particles on the working surface of the model, or rough surface lubricant and overheating of the model, the surface of the product is left with a peripheral trace.

2.9 Impression moldtouchingmark

Glass frit touch the edge of the model, prompting the glass to harden and remain in the glass wall caking marks.

2.10 Water mark

Touches of glass frit water droplets, prompting the glass local hardening, resulting in the product after forming the surface of the left knot scarred marks.