Calibration Standards

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, 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