P.O. Box 109 • North & Depot Sts.
Millville, NJ 08332-0109
Phone: 856-825-3222
Toll Free: 800-257-8405
Fax: 856-825-3375
Home Glass Tubing, Rod & Blanks Lab Equipment & Supplies Clearance Items Glassblower's Supplies Color Glass Mfg. Listings

Glass Tubing & Rod Glossary
I.D. Inside Diameter
O.D. Outside Diameter
Wall The nominal thickness of the glass between the inside and outside surfaces of the tubing
O.O.R. The difference between the minimum and maximum O.D. measurements made at one point along a piece of tubing
Siding This is the difference between the minimum and the maximum wall thickness as measured at the end of the tube
Airlines These are elongated air bubbles within the tubing or rod. They may be buried within the glass or open on the surface
Chips A depression on the glass surface of tubing or rod caused by flaking of the glass.
Stones A piece of undissolved or crystallized refractory material or glass batch appearing in the glass as an opaque lump.
Bow Bow is measured as the maximum deviation from a straight line connecting any two points on the tube.
Taper The maximum gradual dimensional change in the O.D. of one end of the tubing or rod to the opposite end.
Check A fissure extending into the wall of tubing or rod.
Scuff-scratch Abrasion which might occur during the manufacturing process, shipping, storage or use.
Cord An optical or surface effect usually in a narrow band caused by non-homogenous glass.
Stress A condition of tension or compression existing within the glass.
End Finishes
  1. Cut at Draw - Raw ends not fire-polished or glazed.
  2. Cut and Fire-Polished - Cut at draw. Ends fire-polished to heal sharp edges.
  3. Trimmed - Tubing cut to specific length.
  4. Trimmed and Glazed - Tubing cut to length and fire-polished to heal sharp edges.
  5. Cut and Ground - Tubing cut to length and ends ground.

home •  glass tubing rod & blanks • lab equipment & supplies • clearance items • glassblower's supplies • color glass • mfg. listings • search • terms and conditions

All statements of policy, prices, and specifications are subject to change or withdrawal.

The Macalaster Bicknell  Company, as a distributor for the products described in this web site, warrants that representations for the products described, accurately reflect the manufacturer's representations to the Macalaster Bicknell Company.
The Macalaster Bicknell Company, therefore, expressly disclaims any and all warranties, whether implied, expressed, or statutory, including the warranty of FITNESS FOR USE and MERCHANTABILITY. The Macalaster Bicknell Company will, in no event, be liable for any consequential or incidental damages caused by the use of any products described in this web site.

Phone 856.825-3222 • Toll Free 800.257.8405 • Fax 856.825.3375 • Email
This page last updated on 12/29/2006
© Copyright 2007 Macalaster Bicknell Company of NJ, Inc. All Rights Reserved.
Site designed by Catalog Services, Inc.