Custom Quartz Test & Digestion Tubes

Parameter	Typical Range
OD	10–30 mm
Length	100–300 mm
Wall thickness	1–2 mm
Bottom shape	Round or flat
End	Open, or fitted with cap/joint

Inquiry

Quartz tubes closed at one end for sample testing or acid digestion, with the bottom shape and wall thickness suited to heating and handling.

OD, length, and wall thickness are quoted together — a longer tube at a given OD needs proportionally more wall thickness to resist bowing during heating, so confirm all three rather than length alone.

Bottom Shapes, Wall Thickness and End Designs

Round-bottom tubes distribute heat more evenly and are standard for digestion work; flat-bottom tubes stand unsupported for general test use. Open ends are standard; a cap or ground joint is available where the tube needs to seal during heating or storage.

Quartz Test & Digestion Tubes Size / Capacity / Joint Standard

Wall thickness generally needs to increase for tubes used in acid digestion at high temperature, versus simple room-temperature sample holding — tell us your process temperature and we'll confirm the wall thickness needed. Fabrication is cut-to-length tube stock with the bottom formed and fire-polished, and the open end ground or fitted as specified. Before shipment we check OD, length, wall thickness, bottom condition, end finish, and appearance.

AASRack Compatibility

ICPRack Compatibility

OD × LPrimary Dimensions

OpenEnd Option

ThreadedEnd Option

Low BackgroundMaterial Requirement

Instrument Compatibility

Tube OD, Length and Closure Must Match the Digestion Position

Controlled Feature	Reference Capability / Requirement
Instrument / Rack	AAS-, ICP- or digestion-block position identified in the RFQ
OD × Length	Finished tube dimensions matched to the holder and heating zone
Wall Thickness	Specified with heating method and sample volume
Bottom	Round, flat or conical end geometry
Opening	Plain, threaded or ground-joint connection
Cut Length	Datum and end finish stated for rack consistency
Material Requirement	High-purity, low-background quartz requirement stated with the analytical method
Temperature Duty	Heating cycle supplied by the customer; no universal duty assigned to every closure

Tube Selection

Start from the Rack and Heating Method

Configuration	Use	Critical Inputs
Open test tube	General heating and sample handling	OD, length, bottom and wall
Threaded digestion tube	Closed analytical preparation	Cap system and thermal cycle
Ground-joint tube	Connected or reflux work	Joint size and mating part
Custom rack set	Multi-position digestion block	Rack drawing and tube-to-tube length consistency