Sixty thousand square feet on the south end of Toledo, Ohio. Six lathes, eight bench stations, three pin-fired quartz torches, two Lehr annealing ovens. Every step performed under one roof, by named fabricators.
Walk through our roll-up door and you'll hear it before you see anything: the steady rush of natural-gas torches, the soft mechanical hum of a glass lathe pulling a 24/40 joint, the click of a polariscope being indexed for the next anneal check. We are a working glass shop. Nothing in our catalog is drop-shipped. Nothing is re-labeled. Every piece that goes into one of our boxes was pulled, bent, or blown by somebody on our payroll.
Our Toledo address is also our manufacturing address — we don't operate a separate showroom or sales office in another state. That's intentional. When an analytical chemist on the phone asks whether we can hold a 0.05 mm wall on a condenser jacket, the person answering can walk fifteen steps to a lathe and confirm. When a pharma QC manager wants to inspect their lot before it ships, we walk them onto the floor.
The headcount is small on purpose. Fourteen scientific glassblowers, average tenure of 11.4 years, plus three apprentices in the ASGS-affiliated program we host on-site. Add a dedicated quality team of two, a sales engineer who came up through the torch, and the front office. That is the entire company.
A current inventory of the production equipment behind every Premier Lab Glass piece.
| Equipment | Make / model | Capacity | Use |
|---|---|---|---|
| Glass lathes | Litton-Engineering 8B (×4) · Heathway HL-30 (×2) | 30 in. swing · 14 ft bed (largest) | Production runs, joints, large reactor bodies |
| Bench stations | Carlisle CC, ribbon & surface mix burners (×8) | — | One-off custom, repairs, side-arm work |
| Quartz torches | Pin-fired hydrogen-oxygen (×3) | 2,200 °C flame | Fused silica, high-temp work, UV cells |
| Lehr annealing ovens | Deltech DT-31-FL · Thermolyne F48055 | 3,200 L combined volume · 1,200 °C | Programmed cool-down, stress relief |
| Polariscope | Strain-Optic PSV-100 (×2) | — | Residual stress verification on every annealed batch |
| Optical comparator | Mitutoyo PJ-A3000F | 300 mm screen, 50× / 100× lenses | Joint geometry, dimensional QC |
| Coordinate-measuring arm | Faro Quantum-S 7-axis | 3.7 m reach · ±25 µm | 3D verification of assemblies and reactor systems |
| Volumetric calibration bath | Custom build, NIST-traceable references | 20 °C ±0.05 °C | Class A volumetric calibration |
| Pressure-test rig | Custom — N₂ to 5 bar, hydrostatic to 10 bar | — | Reactor and pressure-vessel proof testing |
| Diamond-tooled cutoff & grinding | Hillquist M-12 · Sommer & Maca SM-200 | — | Tube cutoff, joint grinding, blank prep |
Same workflow on a single Erlenmeyer or a fifty-liter pilot reactor. The smaller pieces just move through faster.
A scientific glassblower walks every drawing for thermal stress, joint geometry, port angles, and producibility. Anything risky gets flagged before pricing — better to redraw than to break it on first heat-up.
Boro 3.3, Boro 5.0 (USP Type I), fused quartz, soda-lime. All material lots traceable to the supplier MTR. We refuse to use unknown-origin tubing, even for non-critical pieces.
Six lathes and eight bench stations. CNC retrofit on two lathes for production-run repeatability, but the operator is always at the controls — no walk-away automation.
3,200 L Lehr capacity. Cool-down profile per material — 1 °C/min resolution. Skipping the anneal is the #1 cause of glass that "shatters for no reason" three months in. We don't skip it.
Polariscope on every annealed batch for residual stress. Optical comparator for joint geometry. CMM for assemblies. Calibrated bath for Class A volumetric. Reject rate trailing-12-months: 0.41%.
Inspection certificate on every piece. NIST-traceable calibration on Class A. MTR on request. DSCSA pedigree on pharma orders. Pressure-test record on reactors.
Numbers from our trailing-12-month QC records. We will hold tighter on request — quoted on a per-piece basis after drawing review.
Tighter than what you see here? Probably yes — quoted on the drawing. Send a print and we'll come back with what we can hold and what it costs.
Customer audits welcome. Two weeks notice, NDA on file, safety briefing on arrival.