Calibration Standards

Test & Measuring Instruments, Food Processing & Preparation

Refillable Permeation Tubes accommodate light hydrocarbons.

July 1, 2015

Used in FlexStream™ calibration gas generator to produce ppm and ppb mixtures directly from pure gases, Trace Source™ 57 Series only use gas phase of compound. Controlling pressure in tube allows high-vapor pressure compounds – methane, ethane, ethylene – to be dispensed by permeation. Emission rate is proportional to compound pressure in tube, and attainable single-step dilution ratios from 1000:1 to >50,000,000:1 allow ppb mixtures to be made directly from pure analyte compound. Read More

Test & Measuring Instruments, Sensors, Monitors & Transducers

Helium Leak Detector features tablet-style interface.

March 24, 2015

Equipped with 7 in. Android touchscreen display/controller, HELIOT 900 features fast pumping speed of 5 L/sec to detect small leaks of helium or hydrogen quickly. Unit has multiple valve design, providing sensitivity of 10–12 Torr-L/s. Internal monitoring of error and alarm conditions detect problems before damage occurs. Offered in 5 different models, HELIOT 900 is suited for automotive, air conditioning, refrigeration, electronics, semiconductor, industrial, and pharmaceutical industries. Read More

Food Processing & Preparation, Test & Measuring Instruments, Electrical Equipment & Systems

Permeation Standards support trace light hydrocarbons.

June 9, 2014

Using FlexStream™ + Flex GF™ gas standards generator and Series 57 Gas Permeation Tubes, trace concentration mixtures of C1-C3 hydrocarbons can be prepared. Dynamically mixed concentrations from less than 10 ppb to over 1,000 ppm are available with single dilution for pure compounds. Series 57 tubes use controlled pressure of analyte vapor as permeate source to control extremely low flows of very high pressure gases for blending very low concentration mixtures in single step. Read More

Test & Measuring Instruments

Glass/Oil Standards address glass refractive index measurements.

February 4, 2014

Used to calibrate instruments that measure refractive index of microscopic fragments of glass and glass-like materials, Glass Refractive Standards set consists of calibrated glass samples and immersion liquids calibrated for refractive index versus temperature. Materials, designed for compliance with standard test methodology in ASTM 1967, cover 1.4800–1.5400 refractive index range. Also, oils have thermal coefficient and delta of that coefficient that meets ASTM criteria for such tests. Read More

Food Processing & Preparation, Test & Measuring Instruments, Materials & Material Processing

Permeation Tubes provide standards for hazardous pollutants.

September 4, 2013

Dynamic blends of trace concentration mixtures of phenol and other hazardous pollutants are available via Trace Source™ permeation tubes and FlexStream™ computer controlled perm tube system. Tubes are available for concentrations from <30 ppb for disposable tube at 60°C to 150+ ppm from high rate tube operated at 120°C. Mixtures can be delivered at room temperature, dry, or humidified. Applications include filter testing and qualification, environmental monitoring, and sensor development. Read More

Food Processing & Preparation, Test & Measuring Instruments, Fluid & Gas Flow Equipment

Two-Stage Dilution System generates PPB and PPT gas standards.

May 7, 2013

Using Trace Source™ Permeation Tubes, Span Pac™ I – SD dilution system adds precisely known flow of span vapor into controlled, adjustable flow of clean matrix gas to create PPM calibration standard. Second dilution stage further dilutes mixture with matrix gas to lower concentration. Output concentration can be varied over range of up to 10,000:1 from single tube. System can also be used to create adjustable concentration while maintaining constant total flow with concentrations of up to 400:1. Read More

Test & Measuring Instruments, Vision Systems, Optics & Photonics

Light Source facilitates imaging device PRNU comparison.

December 12, 2012

Built around 8 cm dia sphere with 19 mm dia light output port, ISS-8P-HP Integrating Sphere Light Source features uniformity equal to or better than 98% within 90% of output, and is useful as calibration standard for Photo-Response Non-Uniformity comparison. Unit offers selectable 10–100 W QH lamps and 3 manually interchangeable neutral density filters with OD0, OD1, and OD2 optical densities corresponding to 100%, 10%, and 1% light throughput for fast H-M-L High Medium Low adjustment of output. Read More

Food Processing & Preparation, Test & Measuring Instruments

Permeation Tubes suit calibration of air monitors.

October 4, 2012

Available for concentrations from low ppb to 10 ppm in 1 L/min dilution flow, Trace Source™ Permeation Tubes use mixture of reagent grade nitric and sulfuric acids as analyte source. Sulfuric acid binds water, minimizing water emission to negligible levels. Since emission of sulfuric acid is extremely low, emission is primarily nitric acid. Formation of nitrogen oxides in vapor is minimized by dynamically blending emission to form trace concentration mixtures that are then used immediately. Read More

Food Processing & Preparation, Test & Measuring Instruments

Permeation Tubes are available for hydrogen cyanide.

September 25, 2012

Dynacal® Permeation Tubes consist of inert capsules containing pure chemical compound in 2-phase equilibrium between its gas phase and its liquid or solid phase. At constant temperature, device emits compound through permeable portion at constant rate. Accurate, stable concentrations range from PPB to high PPM. Rates can be certified using standards traceable to NIST by measuring gravimetric weight loss over known period of time at known temperature. Read More

Test & Measuring Instruments, Materials & Material Processing

Gas Standards are available for low volatility pollutants.

May 10, 2012

Trace Source(TM) permeation tubes are used to dynamically blend calibration gas standards for Hazardous Air Pollutants (HAPs), such as phenol, toluene 2.4 diisocyanate (TDI), triethylamine, or naphthalene. When held at constant temperature, tubes emit constant flow of vapor. Diluting that flow with known flow of pure nitrogen or zero air forms low-pressure gas standard, and permeation tube flow is measured by monitoring rate of weight loss of tube. Mixtures are traceable to NIST. Read More

Test & Measuring Instruments

Trace Moisture Gas Standard uses two-stage dilution method.

March 12, 2012

Using Trace Source(TM) Permeation Tube, Span Pac(TM) H2O - SD adds concentration of water vapor into flow of dry matrix gas to create calibration standards for trace moisture monitors. Second dilution stage takes adjustable aliquot of primary mixture and dilutes it further with matrix gas. Two-stage dilution allows output concentration of trace moisture to be varied seamlessly over range of up to 10,000:1 from one permeation tube. System adds water vapor concentrations from 100 ppb to 5,000+ ppm. Read More

Test & Measuring Instruments, Material Handling & Storage

Gas Calibration Kit is used with gas-sensing transmitters.

December 14, 2011

Supplied in hard carrying case to facilitate transportation, Model GCK-200CO-2000CO2 provides reliable flow of carbon monoxide (CO) and carbon dioxide (CO2) to calibrate Dwyer® gas sensing transmitters. Each kit includes span gas of 200 ppm CO and 2,000 ppm of CO2, reference gas of 99.99% nitrogen, 0.5 Lpm flow regulator, and tubing. Certificate of analysis and material safety data sheets are included for both gas cylinders. Read More

Food Processing & Preparation, Test & Measuring Instruments

Permeation Tubes blend gas calibration standards.

November 9, 2011

Used for analysis of hazardous air pollutants, Trace Source(TM) Permeation Tubes emit constant flow of vapor to dynamically blend low-pressure gas mixtures. Emission flow measurements are traceable to NIST through fundamental measurements such as weight change, and temperature. Concentration can be adjusted by adjusting dilution flow rate. Applications include formaldehyde, hydrazines, ethylene glycol, cresols, naphthalene, and 15 other compounds not available as cylinder mixtures. Read More

Test & Measuring Instruments, Electrical Equipment & Systems

Gas Standards Generator offers variable concentration at constant flow.

September 12, 2011

Combining FlexStream(TM) Automated Permeation Tube System and Secondary Dilution Module, FlexStream(TM) CF configuration creates adjustable concentration gas mixtures with constant output flow using permeation tube sources. Software adjusts dilution and aliquot flows to achieve desired concentration in final mixture, facilitating operation and allowing remote/automated control. Concentration adjustment over 200:1 range is possible without affecting output flow. Read More

Food Processing & Preparation, Test & Measuring Instruments

Permeation Tubes produce arsine impurity calibration standards.

April 26, 2011

Trace Source(TM) 57FPK Gas Fed Permeation Tubes produce stable ppb calibration standards of arsine and other hydride impurities in polymerization-grade ethylene and propylene. Tubes are used with gas standards generating instrument to maintain them at constant temperature and flush them with olefin matrix gas. Flow of arsine from tubes mixes with this gas to create flowing calibration standard. Process enables concentrations from below 10 ppb to over 500 ppb of arsine to be produced. Read More

Test & Measuring Instruments

Blackbody Calibration Source has 200 to 1,150°C range.

January 10, 2011

Bench type design model BBS 1150 features emissivity of +0.995, 2 in. dia aperture, and uniformly heated spherical cavity. Offering user-selectable pushbuttons, PID controller allows accelerated adjustment of desired set point temperature. Product attains set point temperature and stabilizes, producing temperature reading to within 0.5°C for accurate calibration of instruments such as non-contact IR thermometers, thermal imaging camera systems, and spectrophotometers. Read More

Test & Measuring Instruments, Electrical Equipment & Systems

Gas Standards Generator offers varied concentration, constant flow.

January 3, 2011

FlexStream(TM) Automated Permeation Tube System, combined with Secondary Dilution (SD) Module, creates variable concentration gas mixtures in constant output flow to facilitate test gas mixture production. Primary mixture concentration can be varied over 10:1 range in permeation unit, and adjustable aliquot of that mixture is added to constant dilution flow in SD module. Resulting concentration adjustability is over 100:1. Functionality accommodates contamination exposure applications. Read More

Test & Measuring Instruments, Electrical Equipment & Systems

Gas Standards Generator creates gas mixtures to over 500 ppm.

November 9, 2010

FlexStream(TM) Gas Standards Generator creates mixtures by diluting emission from permeation tubes, or diffusion tubes, with inert diluent. In Trace Source(TM) permeation tubes, alpha-polyoxymethylene decomposes to maintain stable vapor pressure of formaldehyde and stable emission rate of formaldehyde. Formaldehyde emitted from tube is mixed with zero air in FlexStream(TM) instrument to form trace concentration gas standard. Emission flow measurements are traceable to NIST. Read More

Test & Measuring Instruments, Electrical Equipment & Systems

Gas Standards Generator deals with trace sulfur compounds.

September 3, 2010

Offered as modular system, FlexStream(TM) uses Trace Source(TM) permeation tubes, which add precisely known concentrations of sulfur compounds to nitrogen, ethylene, or propylene matrix. It is configured with 2 permeation ovens and secondary dilution module for producing mixtures containing H2S, COS, and range of higher boiling sulfur compounds. Concentration can also be varied for multi-point calibration, and microprocessor system sets dilution flows and selects proper operating mode. Read More

Test & Measuring Instruments, Vision Systems, Optics & Photonics

Light Source features uniformity of output within 19 mm dia.

April 27, 2009

Providing adjustable hemispherical light output, model ISS-8K-100-VAHP is based around 80 mm dia integrating sphere, which offers greater than 98% white-diffuse reflectance across visible and near infrared spectral range. It combines 100 W QH lamp, variable aperture, and interchangeable OD0, OD1, and OD2 attenuators, delivering output signal level step control from 0.1-100,000 cd/m². Product can be used as calibration standard for luminance and radiance measurement instruments. Read More