Occupational Health

Spirometry, Hearing & Vision Screening, Supplies as well as Calibration & Service


Work site & OSHA Compliance

Occupational Safety and Health Administration

OSHA states Audiometer shall be checked acoustically, at least annually, according to the procedures described in this appendix:

During each calibration we are looking for anything that could go wrong during the next year. It’s our job to keep your equipment in top running order keeping you from delays in Testing

R-B Instruments is your full service calibration company offering on-site calibration for most equipment therefore reducing the requirement to send off your equipment for calibration.

Don’t risk the possibility of costly fines or damage to your reputation because of non-calibrated equipment.

Click here and Schedule an appointment today!


Hearing screening Package

Includes full set-up, training, calibration and noise level certification



Spirotrac Spirometer with Software

Full featured desktop spirometry complete with Spirotrac software to integrate with your PC, laptop or tablet.

Pneumotrac Spirometer with Spirotrac 6 Software

Sleek design with no moving parts for optimal robustness, Pneumotrac has a reduced desktop footprint allowing spirometry testing to take place wherever your PC, laptop or tablet can go.Pneumotrac with Spirotrac 6 software is compliant with the 2019 ATS/ERS spirometry update, ensuring your service meets international guidelines on accuracy and reporting.

Providing you with advanced quality control feedback for rapid and easy testing, Pneumotrac with Spirotrac 6 is compatible with all major EMR systems via HL7.

The powerful built-in report generator  allows you to change any aspect of the reports and generate a wide range of report templates.

The Vitalograph Pneumotrac spirometer comes with a full 5-Year Warranty

Group Purchasing

Benefit from economies of scale and coordinated service standards by using the same cardio-respiratory devices and software across your organisation.

  • Efficiencies across sites with a common hardware platform and software eco-system.
  • Phased purchasing, as your current spirometers become due for replacement.
  • Global service agreements.
  • Global technical support including software upgrades

JUST $2600

The Pneumotrac Spirometer comes with:

Spirotrac 6 Software (including HL7 connection kit)
Protective carry pouch
USB cable


Micro Audiometrics


This lightweight, truly portable audiometer is equally at home in the palm of your hand or taking up a fraction of the work space of other “portable” audiometers.

Easy to use… The Earscan® 3 is a fully programmable audiometer, allowing customization of the entire test procedure, from the intensity step size to the frequencies selected for testing.

Operator to patient communication (talkover) is built in, allowing test instructions to be presented via the headset.

Built in calibration reminders ensure the validity of test results.

Upgradeability ensures that the Earscan® 3 will meet both current and future needs.

With standard RS-232 communications, data can be transferred to a variety of printers and PC programs.

With one of the longest warranties on the market, you can be sure the Earscan® 3 will serve you now and in the years to come.



Pure Tone Audiometry, Automatic Audiometry Patient Controlled, according to ISO 8253-1 and standard Hughson Westlake procedure (selectable on control panel)
Audiometer Class 4 according to EN ISO 60645-1


  • L x W x H: 4.5” x 7.5” x 1.2”
  • Net Weight: 1.32 lbs. without battery
  • Body material: Plastic cabinet


Built-in talk forward microphone 50-110 dBSPL (adjustable on control panel)



  • Dedicated “Store” button to save measurements into the internal memory (up to 50 patients).
  • The patient will be identifi­ed by an ID number.
  • Stored data can be viewed on the built-in display or transferred to the PC or Noah® using Resonance Management Data Suite (MDS) software.


  • MDS software with reporting and printing features
  • Compatible with Windows® 7, 8, 8.1, 10
  • Date transfer via USB cable

VT1 Vision Screeners

Why use VT1 Vision Screener?

Vision Screening

Optec 5500P


A portable dual lens (near and far) vision tester with a remote control panel that can measure visual acuity, depth perception, color vision, lateral and vertical phoria and peripheral vision.
Lightweight and portable
Homogeneous illumination
L.E.D lighting
Background luminance complies with international standards
Two separate viewing ports for accurate distance
Supplied with carrying case and patient response switch
The Optec 5500P is ideal for all industrial and DSE vision screening requirements. Visual acuity, depth perception, color, phoria and peripheral vision can all be determined in a very efficient manner.
Ease of use
A large viewing port, combined with a test pointer, facilitates fast and effective patient testing. Height adjustment ensures patient comfort and a remote control panel saves time and gives excellent test flexibility.
Several features provide for an extremely accurate vision test system.
An advanced lighting system ensures high resolution, true color test
images with no glare reflection.
There are no light bulbs to change as the instruments utilize a microprocessor controlled LED lighting system. A dual lens system permits a more accurate test on bifocal/multi focal patients.
Standardized test slide kits are available to meet the needs of industrial and primary care organizations. For specialist needs, there is a library of over 150 test slides available.
Design features
Dual lens system permits the patient to use normal bifocals without having to move their head.
Observation windows on the sides of the instrument permit the test administrator to identify test images should clarification be needed by the test subject.
Confidential testing. Only the subject and administrator can observe the test and results.
No light bulbs to change since a microprocessor controlled LED lighting system is utilized.
Lens system permits far, near and intermediate testing.
Disposable headrest tissues for maximum hygiene.
Locking adjustable height mechanism accommodates all patients.


OPTEC PLUS Smart Vision Screener

Your practice requires a new generation of vision screening devices

The Stereo Optical OPTEC PLUS all-in-one digital vision screener enables quick, thorough and repeatable results in the pre-test room, saving valuable time in the exam lane.

New features include a user-friendly interface, an expanded library of tests with limitless customization including randomization, automatic mode, and protocols by patient type.

  • Testing distances: Near, Far and intermediate
  • Monocular and Binocular
  • Lighting conditions: day / night
  • Constant and homogeneous luminance levels with controlled lighting in accordance with the international standard
  • Multiple language options available
  • No training or certification needed
  • Lightweight and portable
  • Tablet, laptop, or personal computer (PC)
  • Optional mask for vertical peripheral field testing




Noise-reducing headphones

Industry-leading audiometric headphones designed to ensure accurate pure tone audiometry testing in conditions where ambient noise becomes too high for unshielded earphones.

Our Audiocups are the perfect add-on to a standard air conduction headset such as the RadioEar DD45, Telephonics TDH39 and TDH49 transducer and are easily retrofitted in the field without the need for recalibrating your audiometer.

Consisting of a headband, a cup for each ear side dampened with foam and a spring for the headset transducer to be fitted, allowing the transducers inside the cups to fit with any ear shape without obstructing the ear canal.

Please note: image shows complete headset option with fitted transducers.



Unknown-3An automatic validation instrument for air conduction (AC) screening audiometers and acoustic booths (when used)
Totally automatic
Easy to use
Consistent results
Modern electronic design

The ER75 Electro-Acoustic Ear Simulator is designed to provide an objective performance validation of audiometric equipment.
Ease of use
Completely automatic, the ER75 will respond in a consistent manner to produce repeatable thresholds over the frequency range of 250Hz to 8000Hz.
Any variations with previously recorded levels can be identified and acted upon immediately to ensure optimum performance of the audiometric test facility.
Compact and battery powered, the ER75 can be used for both static and mobile requirements.


The MI-300


The MI-300 Calibration Monitor performs a quick and efficient daily biological calibration check of your audiometer, as required by OSHA. Its lightweight and durable construction will insure years of trouble-free operation.








OSHA compliance checks have never been faster or more convenient. The Tremetrics OSCAR 6 and OSCAR 7 Electro-Acoustic Ears are the reliable test subject substitutes that help you generate a daily legal record to document that your audiometer is “in calibration.” OSCAR 7 is a dual-function instrument, providing both the daily biological test and the OSHA octave band sound level check for your test environment.

These dependable units accomodate all standard and Audiocups earphone enclosures and include self-guiding, color-coded earphone couplers so that headsets can be properly positioned every time.

Tremetrics AR940 Sound room

The Mini Sound Room is appropriate for hearing health professionals, industrial monitoring, mobile test vans, public schools, and speech audiometry.

Basic Features Included with this Model

Ventilation System

Effective air circulation is accomplished by acoustically engineered, detachable ventilation systems. The number of systems required depends on the size of the sound isolation booth. Each isolation booth ventilation system is equipped with a remote fan unit that has 10 adjustable speeds. On the maximum setting, air circulates at a rate of 205 CFM (cubic feet per minute).

Door Window

A door window is provided with each WhisperRoom™ model. Multiple layers of 1/4″ thick laminated safety glass are used. Laminated safety glass is used because of its superior noise reduction capability and safety features.

If broken, it will not shatter. Air buffers and the weight/sq ft of the window exceed that of a solid wall component to prevent noise transfer.

Acoustic Studio Foam (Auralex)

Each model comes with enough Auralex® acoustical foam to cover about 1/3 of the interior. Each sheet is 2′ x 4′ and 2″ thick and attaches to the interior with Velcro®. This allows the user to customize the interior acoustics to suit their needs.

The foam can easily be added to or removed from, the WhisperRoom for applications where a more “dead” or “live” environment is desired. The entire interior surface of each WhisperRoom™ ceiling component and the base of the door are covered with pre-attached acoustical foam wrapped with cloth.

18″ LED Light

Lights shipped with WhisperRooms are intended to provide customers with basic startup lighting.

It is understood that most customers will ultimately purchase and install lighting fixtures more suitable to their individual needs and desires. One or two lights are provided, depending on the enclosure size.



We have adapters for most instruments

click here for

Spirometer Filtered Mouth pieces

Headphone covers

Disposable Covers are the perfect accessory for headphones and headsets that are in shared environments. Keeping proper hygiene is more important now than ever and these covers are an easy way to keep your students, customers and patients safer. Hypoallergenic material and weave design give you full sound quality, comfort and protection.

Low prices high Quality

Available at R-B instruments

50 pairs for -$21.50

250 pairs for $82.50

If your headphones are already rough or deteriorated the red/blue rubber  replacements are available at R-B instruments for only $16 a pair

These covers easily go over each individual head phone

Easy to put on

Easy to remove

Click here for

Spirometer Filtered Mouth pieces

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