Opentrons’s standard 4-in-1 rack fits only 1.5 mL, 2 mL, 15 mL, and 50 mL tubes, and its web Labware Creator rejects mixed well sizes. Datum Labware manufactures precision ANSI/SLAS racks in SLS Nylon PA12, CNC Delrin, and anodized 6061-T6 aluminum, and engineers the exact custom_beta Schema v2 .json definition and Python alignment script from the same CAD datum.
Eight production-ready ANSI/SLAS designs for the laboratory vessels missing from Opentrons’s catalog. Download and test any rack’s .json file in the Opentrons App before ordering.
12 × 32 mm 9-425 screw, crimp, or snap vials (6 × 4 grid)
Built for LC-MS, HPLC, and GC sample preparation directly inside 12 × 32 mm autosampler vials on Opentrons OT-2 and Flex. The 24.0 mm rack height exposes 12.5 mm of the vial neck so caps and septa remain accessible while holding every vial concentric within ±0.15 mm.
| Wells / Pitch | 24 wells · 18 × 18 mm |
|---|---|
| Bore / Rack Z | Ø12.10 mm · 24 mm H |
| Materials | PA12 $189 · Delrin $319 · Al6061 $419 |
28 × 61 mm borosilicate vials (4 × 2 grid, solid CNC Delrin)
CNC-machined from solid black Acetal homopolymer (Delrin) for chemical synthesis, stock-solution dispensing, and polymer formulation workflows. Solvent-resistant billet construction adds deadweight in the deck slot so viscous draws never shift the fixture.
| Wells / Pitch | 8 wells · 29 × 36 mm |
|---|---|
| Bore / Rack Z | Ø28.10 mm · 42 mm H |
| Materials | PA12 $215 · Delrin $349 · Al6061 $459 |
15 × 45 mm flat-bottom glass vials (6 × 4 grid, 18.0 mm pitch)
High-density 24-well SBS rack built for parallel reaction setup, solubility screening, and compound library dilution in 1-dram (4 mL) glass vials. Holds 24 vials per deck slot with 2.45 mm solid web walls between adjacent bores.
| Wells / Pitch | 24 wells · 18 × 18 mm |
|---|---|
| Bore / Rack Z | Ø15.55 mm · 32 mm H |
| Materials | PA12 $199 · Delrin $329 · Al6061 $429 |
16.8 × 57 mm 5 mL tubes (5 × 3 grid with open-lid clearance)
Opentrons’s standard 4-in-1 rack jumps straight from 2 mL to 15 mL tubes, forcing deep P300 plunges or excess dead volume in 15 mL conicals. This 15-well rack holds 5 mL tubes at 21 × 24 mm spacing so hinged snap-caps fold back cleanly without blocking neighboring wells.
| Wells / Pitch | 15 wells · 21 × 24 mm |
|---|---|
| Bore / Rack Z | Ø17.35 mm · 42 mm H |
| Materials | PA12 $195 · Delrin $325 · Al6061 $425 |
Primary blood & clinical collection tubes (6 × 4 tall windowed frame)
Engineered for clinical research and biobanking labs transferring plasma, serum, or buffy coat from uncapped primary collection tubes into 96-well plates. A 56.0 mm tall lateral frame eliminates tube tilt while side inspection windows keep patient/sample barcodes visible.
| Wells / Pitch | 24 wells · 18 × 18 mm |
|---|---|
| Bore / Rack Z | Ø13.65 mm · 56 mm H |
| Materials | PA12 $219 · Delrin $369 · Al6061 $469 |
Bead-blasted 6061-T6 aluminum (8 × 4 grid, cold-block & autoclave ready)
Machined from solid 6061-T6 aluminum for cold-chain biobank cherry-picking, viral/cell stock aliquoting, and heat-block workflows. Pre-chill at -20 °C or +4 °C before placing on the Opentrons deck to keep 32 cryovials cold throughout automated transfers.
| Wells / Pitch | 32 wells · 14.07 × 18 mm |
|---|---|
| Bore / Rack Z | Ø12.95 mm · 34 mm H |
| Materials | PA12 $209 · Delrin $349 · Al6061 $439 |
6× 20 mL stock vials + 20× 2 mL HPLC vials in one SBS slot
Opentrons’s web Labware Creator rejects any rack with mixed well diameters, pitches, or heights. Datum Labware machines dual-zone combination fixtures and authors multi-group Schema v2 JSON definitions so diluents, internal standards, and 20 autosampler vials occupy a single deck slot.
| Wells / Pitch | 26 wells · 30 × 26 mm |
|---|---|
| Bore / Rack Z | Ø28.10 mm · 32 mm H |
| Materials | PA12 $239 · Delrin $389 · Al6061 $489 |
27.5 × 95 mm environmental & analytical vials (3 × 2 deep aluminum block)
Tall 95 mm EPA VOA vials tip easily in shallow adapters and approach robot Z limits if seated too high. A low 5.0 mm datum floor inside a 62.0 mm machined aluminum block keeps overall seated vial height at 100.0 mm (35 mm below the OT-2 and Flex gantry limit.
| Wells / Pitch | 6 wells · 36 × 36 mm |
|---|---|
| Bore / Rack Z | Ø28.10 mm · 62 mm H |
| Materials | PA12 $245 · Delrin $379 · Al6061 $469 |
Enter your vial or tube dimensions in millimeters. Geometry, deck-slot clearances, and the Opentrons Schema v2 .json definition calculate live from the ANSI/SLAS (0,0,0) slot datum.
Selective Laser Sintering (Vapor-De-Powdered): Resistant to alcohols, aqueous buffers, DMSO, and acetonitrile splashes; wipe down with 70% ethanol or 10% bleach.
Send us the manufacturer datasheet, caliper measurements, or STEP file for any commercial tube rack, SPE manifold, heating block, or mixed-vial carrier. We author a multi-group Schema v2 .json definition and a 60-second single-tip alignment verification protocol guaranteed to import cleanly into the Opentrons App.
Built for R&D automation groups, core facilities, and synthetic biology foundries onboarding new vials, plates, and assay fixtures every month across OT-2 and Opentrons Flex fleets.
.json definitions & Python verification scripts with 24-hour engineering turnaround.All parts are manufactured to order in the United States via industrial SLS additive sintering and 3-axis CNC milling.
| Material Grade | Process | Dimensional Tolerance | Thermal Rating | Recommended Laboratory Workflows |
|---|---|---|---|---|
| SLS Nylon PA12 (Matte Black) | Selective Laser Sintering | ±0.15 mm | -20 °C to +95 °C | Aqueous buffers, LC-MS autosampler prep, Vacutainer aliquoting, 5 mL molecular biology tubes, 70% EtOH / 10% bleach wipe-down. |
| Acetal Homopolymer (Delrin POM) | 3-Axis CNC Billet | ±0.05 mm | -40 °C to +105 °C | Organic synthesis (DCM, THF, EtOAc, ACN, DMSO), viscous aspiration, pierced-septum vials requiring high fixture weight against rack lift. |
| 6061-T6 Anodized Aluminum | 3-Axis CNC + Anodize | ±0.05 mm | -80 °C to +180 °C | Pre-chilled +4 °C / -20 °C cryovial cherry-picking, autoclave sterilization (121 °C), heated reactions, and Opentrons Temperature Module mounting. |