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Gateway Scientific — your gateway to all of your calibration needs

Equipment we service

If it dispenses a measured volume, we service it.

Pipettes are the bulk of the work, but they are not all of it. Anything on your bench whose accuracy is part of a result belongs in the calibration program.

An Eppendorf Research single-channel air-displacement pipette on a laboratory bench

Pipette Instruments We Service

Every major air-displacement manufacturer, plus the balances and dispensers around them.

See what we service
  • Eppendorf
  • Gilson
  • Rainin
  • Thermo Fisher
  • Sartorius
  • Hamilton
  • BRAND
  • VWR
  • Oxford
  • Socorex
  • Nichiryo
  • Labnet
  • Integra
  • Corning
  • Mettler Toledo

Don’t see yours? Send the list — coverage is confirmed before we quote.

Instrument categories

Six categories, one asset register.

Consolidating everything under one provider means one due-date schedule, one certificate format, and one set of records when an auditor asks.

Single-Channel Pipettes

Fixed and variable-volume air-displacement pipettes across the full working range, from sub-microliter to 10 mL. The core of nearly every calibration program we run.

  • Variable-volume, 0.1 µL – 10 mL
  • Fixed-volume, all common denominations
  • Manual and electronic actuation
  • Positive-displacement pipettes
  • Ultra-micro and low-retention models

Calibrated gravimetrically to ISO 8655-2 at your selected plan tier.

Multi-Channel Pipettes

8-, 12-, and 16-channel instruments where per-channel performance matters. Every channel is measured independently — a multi-channel pipette is only as good as its worst tip.

  • 8-channel and 12-channel, manual and electronic
  • 16-channel high-density formats
  • Adjustable tip-spacing instruments
  • Per-channel as-found and as-left data
  • Channel-to-channel uniformity reporting

Gold and Platinum plans report results for every channel, not a channel average.

Electronic & Repeating Pipettes

Motorized instruments with programmable modes, plus repeater and stepper pipettes. These carry electronics and drive trains that mechanical-only servicing will miss.

  • Electronic single- and multi-channel
  • Repeating and stepper pipettes
  • Programmable dispensing modes
  • Battery, charging, and drive assessment
  • Firmware and mode verification

Electronic instruments receive a drive and power assessment alongside calibration.

Bottle-Top Dispensers & Burettes

Reagent dispensers and digital burettes used for bulk and titration work — high-volume instruments whose drift often goes unnoticed the longest.

  • Bottle-top dispensers, 0.5 – 100 mL
  • Digital and manual burettes
  • Valve, seal, and piston service
  • Gravimetric volume verification
  • Chemical-compatibility review

Serviced on-site or in-lab depending on volume and mounting.

Analytical & Precision Balances

The instrument every gravimetric calibration depends on. We service and verify analytical and precision balances with traceable weight sets and documented as-found data.

  • Analytical balances to 0.01 mg readability
  • Precision and top-loading balances
  • Traceable weight-set verification
  • Linearity, repeatability, and eccentricity testing
  • Leveling, environment, and siting review

Verification performed with traceable class weights and documented as-found results.

Automated Liquid Handlers

Robotic liquid-handling decks whose volumetric performance is rarely challenged after installation. We verify what the deck actually dispenses, tip by tip.

  • Volumetric performance verification
  • Tip-position and per-channel assessment
  • Multi-volume protocol verification
  • Pre- and post-maintenance qualification support
  • Documentation formatted for validation packages

Scoped per deck. Send your platform and protocol volumes and we will quote it.

An analytical balance with a traceable weight set and a calibration record sheet

Consolidate the program

One provider beats four spreadsheets.

Most laboratories we take over are running pipettes with one vendor, balances with another, and dispensers with nobody at all. That is three certificate formats, three intervals, and at least one instrument nobody has looked at in years.

  • A single reconciled asset register across every instrument class
  • One interval schedule, so nothing quietly goes overdue
  • One certificate format your quality team already knows how to read
  • One point of contact when an auditor asks a question
  • Volume pricing that improves as the program consolidates
Consolidate my program

Who we serve

Different labs, different stakes.

A teaching lab and a GMP release lab both need working pipettes. They do not need the same record. We scope the program to the consequence of an error in your work.

Pharmaceutical & Biotech
GMP-controlled environments where the calibration record is part of the batch story. Platinum protocols, measurement uncertainty on request, and documentation built for inspection.
Clinical & Diagnostic
CLIA and CAP-inspected laboratories where volumetric error moves a patient result. Fast turnaround, complete as-found data, and interval discipline.
Academic & Research
Core facilities and teaching labs with large, mixed, heavily used instrument pools. Silver and Gold plans keep hundreds of pipettes healthy on a predictable budget.
Environmental & Water
NELAP and state-certified laboratories where volumetric traceability is a standing audit question and the schedule cannot slip.
Food, Beverage & Cannabis
Potency, contaminant, and safety testing labs under state and third-party accreditation, where method accuracy starts at the pipette.
Industrial & Materials QC
Process and quality-control laboratories that need instruments verified and back on the bench without disrupting a production schedule.

Equipment questions

Before you send the list.

Still have a question?

Talk to a metrology technician, not a call centre. We’ll tell you straight whether we can help.

Get started

Send the list. Even a rough one.

A spreadsheet, an export from your LIMS, or a photo of the drawer is enough to start. We'll identify what we can service and quote it by instrument.

No obligation · Written quote · Monday – Friday, 8:00 AM – 5:00 PM ET