Custom Cleaning Brush
Test Tube Brush
Test Tube Brush is built for laboratory tube and glassware cleaning where the brush must enter or follow glass bores, tapered walls, and bulb sections. Head size, working length, stem flexibility, and fill are selected to loosen reagent film, precipitate, and powder without losing access or control.
Product Features
Fan tip reaches the rounded base — Flared bristles clean the bottom transition that flat-cut heads can miss.
Long cylindrical section cleans the sidewall — The brush maintains contact along the tube bore.
Gentle contact for laboratory glass — Medium-soft nylon, PBT, or polypropylene bristles remove reagent film without metal-wire abrasion.
Long twisted-wire stem — The slender stem provides reach and controlled flex through narrow test-tube openings.
Several profiles for different labware — Standard, semi-micro, tapered, and fan-tip versions can be made for test tubes, culture tubes, and small cylinders.
Fan-tip profile matched to the labware — Diameter, bristle-section length, overall length, filament, tip, stem, and loop can be customized.
Product Overview
Test Tube Brush uses a working section shaped around the available opening, depth, and internal profile. It contacts glass bores, tapered walls, and bulb sections to remove reagent film, precipitate, and powder; the access path and minimum clearance determine whether the brush needs a rigid stem, a flexible extension, a tapered head, or a stepped cleaning section. The brush must reach the full vessel length without scratching glass or striking the base with exposed wire.
Key dimensions start with Brush head diameter 9.5–44.5 mm, Brush head length 76–114 mm, and Handle length 159–305 mm. This is a tube-style brush design for controlled contact inside internal passages. The specified interface is threaded removable / fixed. PBT, Polypropylene PP, and Nylon PA are the principal material directions in the current specification. The handle, neck, and brush head should give the operator enough reach and control without forcing the bristles into the surface.
Technical Specifications
| brush diameter | 9.5–44.5 mm |
|---|---|
| Brush length | 76–114 mm |
| Overall length | 159–305 mm |
| Filament diameter | 0.15–0.30 mm |
| End shape | Tufted, sponge, fan, or cylindrical |
| Stem style | Twisted wire with loop or coated handle |
| Contact setting | Use near-size contact for wiping and 5–20% oversize for flexible polymer scrubbing; use lower interference with wire. |
| Fill materials | PBT, Polypropylene PP, and Nylon PA |
| Cleaning zone | laboratory tube and glassware cleaning |
| Contact surface | glass bores, tapered walls, bulb sections, graduations, and narrow necks |
| Residue class | reagent film, precipitate, powder, oil |
| Access and motion | the brush must reach the full vessel length without scratching glass or striking the base with exposed wire |
| Cleaning duty | laboratory tube, glassware cleaning on glass bores, tapered walls, bulb sections, graduations |
| Variant configuration | Test Tube Brush: tube construction with PBT, Polypropylene PP, Nylon PA fill for laboratory tube and glassware cleaning on glass bores, tapered walls, bulb sections, graduations. |
Application Areas
Test Tube Brush is primarily mapped to Laboratory Tube Cleaning. For a different application, first confirm the surface, where the loosened debris will go, and the finish you need.
- Test Tube Brush is best suited to laboratory glassware, beaker, flask, cylinder, petri dish, chromatography, and vessel cleaning.
- The twisted-in-wire, flexible-rod, pull-through, fan-tip, or powered bore brush follows inner wall, base, neck, shoulder, graduations, narrow tube, and flat dish surface while the fill displaces chemical film, precipitate, powder, biological residue, oil, and detergent film.
- Use this configuration when the available access supports radial filament contact inside a bore, tube, hose, channel, nozzle, or drilled passage.
Selection Guidance
Structure fit
Match the tube & pipe bore brush geometry to glass bores, tapered walls, and bulb sections, the available access, and manual operation. Confirm Brush head diameter 9.5–44.5 mm, Brush head length 76–114 mm, and Handle length 159–305 mm against the complete working envelope before finalizing the brush.
Contact material
Choose from PBT, Polypropylene PP, and Nylon PA according to the behavior of reagent film, precipitate, and powder, the surface sensitivity, and any wet, chemical, temperature, or hygiene requirements. Brush stiffness depends on the material plus filament diameter, free trim length, and fill density.
When to use another solution
For Test Tube Brush, use another cleaning method when reagent film, precipitate, and powder cannot be released by controlled filament contact, when glass bores, tapered walls, and bulb sections cannot tolerate the selected contact material, or when the access path prevents safe engagement and residue removal.
Customization Options
| Brush Head Diameter (mm) | 9.5–44.5 |
|---|---|
| Brush Head Length (mm) | 76–114 |
| Handle Length (mm) | 159–305 |
| Handle Grip Diameter (mm) | Not Applicable (No explicit grip or handle-diameter dimension in the product specification) |
| Bristle Material | PBT, Polypropylene PP, Nylon PA |
| Handle Material | 304 Stainless Steel |
| Mounting / Interface | Threaded Removable / Fixed |
| Grip Style | Straight Handle |
| Color | Custom PANTONE Color ([Industry Reference Range]) |
| Logo Process | Laser Engraving / Screen Printing / Pad Printing ([Industry Reference Range]) |
| Surface Treatment | Smooth / Textured / Overmolded / Coated (Depending on Substrate; [Industry Reference Range]) |
Frequently Asked Questions
How should Test Tube Brush be selected?
Start with laboratory glassware, beaker, flask, cylinder, petri dish, chromatography, and vessel cleaning, inner wall, base, neck, shoulder, graduations, narrow tube, and flat dish surface, and chemical film, precipitate, powder, biological residue, oil, and detergent film. Then set brush diameter, Brush length, and Overall length, choose the fill from the material and residue table, and match the mounting interface and operating condition.
Which dimensions define Test Tube Brush?
The primary dimensions are brush diameter (9.5–44.5 mm), Brush length (76–114 mm), and Overall length (159–305 mm). Also provide the minimum clearance, working envelope, trim or engagement, and the existing holder, shaft, stem, thread, or handle.
Which filament or contact material is used for Test Tube Brush?
The primary options are PBT, Polypropylene PP, and Nylon PA. The final choice follows surface sensitivity, residue adhesion, wet or dry use, temperature, chemicals, conductivity, and required cutting action.
When is Test Tube Brush not the best cleaning method?
Test Tube Brush is not the first choice for pigs, flushing, ultrasonic, chemical descaling, blasting, or a flexible cable system for long, sharply curved, or heavily scaled passages.
What information is required to quote Test Tube Brush?
Send the part or machine drawing, photos of inner wall, base, neck, shoulder, graduations, narrow tube, and flat dish surface, brush diameter, Brush length, Overall length, and Filament diameter, the residue description, wet or dry conditions, motion or use method, temperature, preferred PBT, Polypropylene PP, and Nylon PA, quantity, and the existing interface or sample.
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Custom Brush RFQ
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