Orders or inquiries for special apparatus should be accompanied by prints or drawings, if possible. At-Mar Glass insures the strictest of confidence in handling drawings or prints. To prevent delay and enable us to more intelligently quote on your special items, all necessary dimensions and tolerances should be noted.

The following information should also be furnished where applicable: joint sizes, capacity, whether “to contain” or “to deliver”, porosity of filter, and any abnormal operating conditions, such as extremely high pressure, to which the apparatus may be subjected.