Nortel Unitorch: the six-tip premix hand torch for scientific and lathe work
Nortel Unitorch · Hand torch · Premix
The Nortel Unitorch is a premix hand torch with six stainless-steel tips, built for scientific glassblowing: lathe work, seals, and flame cutting. Nortel says it easily works 40 mm quartz or 75 mm borosilicate standard-wall tubing.
Specs
- Mix type
- Premix
- Mount
- Hand
- Oxygen (estimate)
- n/a
- Fuel
- Propane, Natural gas
- Skill level
- Intermediate, Advanced
- Glass
- Boro, Quartz
- Best for
- Lathe work, Scientific seals, Quartz, Flame cutting
- Price
- ~$458 (reference)
Manufacturer page
Treat the oxygen figure as a rough sizing estimate, not a specification. Depending on the model it may be manufacturer full-flame consumption, a converted flow figure, or a documented estimate, and delivered pressure and purity matter as much as flow. What actually drives a torch choice is the glass, the work, and the flame, so size your oxygen supply after you pick the torch. Prices may be manufacturer list prices or observed dealer references. Use the evidence label and sources below, then confirm the exact configuration before buying.
Overview
The Nortel Unitorch is a premix hand torch with six stainless-steel tips, and its home turf is scientific glassblowing: Nortel lists it for lathe work, dewars, fritted discs, round bottoms, ring seals, graded seals, glass-to-metal seals, and flame cutting. The headline capability is real capacity for a hand torch: Nortel says it easily works 40 mm quartz or 75 mm borosilicate standard-wall tubing.
What the Unitorch is
The Unitorch is a premix torch: fuel and oxygen are mixed inside the body before reaching the flame, which makes the flame simple to light, stable, and predictable, exactly what long seal-making sessions on a lathe demand. The six interchangeable stainless tips are the heart of the design: flame size and character come from the installed tip, so one torch covers work from fine seals to large tubing. For the mixing background, see surface mix vs premix torches; on format, see bench vs hand torch.
Who the Unitorch is for
This is a torch for scientific glassblowers, lathe workers, and repair techs, intermediate-to-advanced users who pick a tip for the joint in front of them. It is not a beginner’s first flame and it is not a soft-glass bead torch; if that’s the search you’re on, start with our best beginner glass torch guide instead. If you’re weighing which glass family your work lives in, see soft glass vs boro vs quartz.
Fuel and oxygen
The Unitorch burns natural gas or propane with oxygen. Because the flame comes from the installed tip, oxygen use is tip-dependent, so no single LPM figure honestly describes the torch; size your supply to the largest tip you’ll run and confirm details with Nortel. Our how many LPM does my torch need guide explains how to think it through.
Where it sits in the Nortel line
The Unitorch is the scientific specialist among Nortel’s hand torches, alongside the surface-mix Ranger and the multi-fuel premix Twin Fuel Handtorch. Nortel also makes a larger Unitorch-12 variant not yet in our catalog.
Before you buy
Budget for the whole system, not just the torch: oxygen (a concentrator or tanks), the correct natural-gas or propane regulator, flashback protection matched to your torch and gas supply, appropriate eyewear for the glass you work (quartz work has its own requirements), and ventilation. New to plumbing a torch? Start with the fittings, hoses & connectors guide and the glass torch safety setup guide.
Editor’s note: capabilities and applications above are Nortel’s own listings for the Unitorch, checked July 2026. The catalog’s $458 price is an approximate reference, and flame and oxygen behavior depend on the installed tip, so confirm configuration and current pricing with Nortel before purchasing.
Fit and tradeoffs
Best for: Scientific glassblowers and lathe workers who need a tip-selectable premix hand flame for seals, dewars, and quartz or boro tubing work.
Not for: Beginners looking for a first soft-glass torch, or anyone needing a mounted bench flame, this is a specialist scientific hand tool.
Pros
- + Six stainless-steel tips let you match the flame to the joint or tube at hand
- + Premix flame: simple to light, stable, and predictable
- + Nortel says it easily works 40 mm quartz or 75 mm borosilicate standard-wall tubing
- + Built for lathe work, dewars, ring seals, graded seals, glass-to-metal seals, and flame cutting
Cons
- − A specialist scientific tool, not a general studio or beginner torch
- − Hand-held only; not a bench production tool
- − Flame size and oxygen use vary by installed tip, so no single LPM figure applies
Flame notes
Premix hand torch with six stainless-steel tips. Nortel lists lathe work, dewars, fritted discs, round bottoms, ring seals, graded seals, glass-to-metal seals, and flame cutting, and says it works 40 mm quartz or 75 mm borosilicate standard-wall tubing.
Maker
Nortel Manufacturing
Canada · Founded 1967
Focus: Soft, Boro, Beginner
Toronto manufacturer founded by Peter Norton. The current mounted line is surface mix; selected hand torches and optional top burners are premix.
Related reading
FAQ
- What is the Nortel Unitorch?
- It's Nortel's six-tip premix hand torch for scientific glassblowing. Nortel lists it for lathe work, dewars, fritted discs, round bottoms, ring seals, graded seals, glass-to-metal seals, and flame cutting.
- Is the Unitorch surface-mix or premix?
- It's a premix torch: fuel and oxygen are mixed inside the torch before reaching the flame. Premix burners are simple to light, stable, and predictable, which is why the style dominates scientific hand torching.
- What can the Unitorch work?
- Nortel says it easily works 40 mm quartz or 75 mm borosilicate standard-wall tubing. That's serious capability for a hand torch; the six interchangeable tips are what let it scale from fine seals up to that size.
- Is the Unitorch a good beginner torch?
- No. It's a scientific and lathe-work tool for intermediate-to-advanced users. A beginner working soft glass at a bench is far better served by a bench burner; see our best beginner glass torch guide.