91�� Research - Analytical Laboratories

Quality Control

hazen-research-admin — Fri, 07 Jun 2013 20:52:18 +0000

The 91�� Analytical Laboratory holds certifications from various state regulatory agencies and from the US Environmental Protection Agency (EPA). We therefore participate in performance evaluation studies as a means of demonstrating competence in the areas of certification.

We maintain a large stock of standard reference materials from the National Institute of Standards and Testing (NIST), the Canada Centre for Mineral and Energy Technology (CANMET), the EPA, and other sources. These materials are used to monitor the accuracy and precision of analytical results.

Quality control programs are documented and available for client inspection.

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Standardized testing gives our clients confidence in the analytical results we produce.

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Analytical Services

Sample Preparation

hazen-research-admin — Fri, 07 Jun 2013 20:42:41 +0000

The limiting factor in analytical accuracy is frequently the quality of sample preparation rather than the precision of the analytical procedure. This set of arts and sciences includes the ability to adequately sample bulk solids (from gram to ton quantities) by various grinding, pulverizing, screening, and blending techniques to produce a representative material of uniform, homogeneous character.

91��'s Sample Preparation Department performs this function for the Analytical Laboratories and supports the company's process development activities.

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91�� can receive and process bulk solids whether they are delivered in gram or metric ton quantities.

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Analytical Services

Fuels

hazen-research-admin — Fri, 07 Jun 2013 20:41:08 +0000

Most of the electricity produced in the United States is generated by burning coal. Nearly one billion tons of coal are mined each year. Our Fuels Laboratory has provided characterization of western coals for both mine operators and utilities since the early 1970s. More recently, with the increase in cogeneration power plant construction, we have expanded our analytical capability to include other kinds of fuels such as agricultural, sawmill, and municipal wastes. In addition to the standard fuels testing listed below, 91�� is equipped to characterize process feeds and intermediates from a variety of sources and biochemical processes.

91��'s Fuels Laboratory offers the following to our clients:

Proximate Analysis (moisture, volatile matter, fixed carbon and ash)
Ultimate Analysis (moisture, ash, sufur, carbon, hydrogen, nitrogen, and chlorine)
Heating Value (Btu)
Ash Fusion Temperatures, Oxidizing and Reducing Atmosphere
Ash Elemental Analysis (Si, Al, Ti, Fe, Ca, Mg, Na, K, P, S (as oxides))
Specific Gravity (true)
Water Content (Karl Fischer Titration)

Samples that are not received at minus 60 mesh will require preparation, which will incur additional labor charges.

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91�� can characterize many different feedstocks for commercial processes.

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Analytical Services

Precious Metals/Fire Assaying

hazen-research-admin — Fri, 07 Jun 2013 20:39:11 +0000

91�� offers a full suite of services to those interested in assaying for precious metals and platinum group metals (PGMs). Please Contact us to obtain a quote for fire or gold assay, and to learn more about our PGM services and capabilities.

91��'s modern fire assay facility permits rapid turnaround time and a high rate of production. 91�� performs fire assay for analytical purposes only and does not offer refining services.

Standard gravimetric finish, atomic absorption (AA), or inductively coupled plasma (ICP) analysis of fire assay doré beads are used as needed.

Platinum, palladium, and rhodium are also analyzed by fire assay using the gold inquart procedure and an ICP-OES finish.

Please note: 91�� certifies that results are representative of only the discrete samples analyzed by the laboratory and that these results may not be representative of anything other than the as-received samples.

Precious Metals Analysis	Required Sample Quantity	Cost, US$
Sample preparation (slitting and pulverizing)	Up to 1 kg	20
Gold by fire assay	90 g	30 (40 with AA finish)
Gold by MIBK extraction and FAAS	100 mL	50
Gold in cyanide liquors by DIBK extraction and FAAS	50 mL	40
Gold bullion analysis by fire assay	3+ g	60
Silver by fire assay	90 g	30
Silver by FAAS	5 g	20
Gold + silver by fire assay	90 g	35 (40 with AA finish)
Gold + silver in activated carbon samples by fire assay	10 g	45
Platinum, palladium, or rhodium by fire assay and ICP-OES	120 g	1 element: 50 2: 70 3: 90

DIBK = diisobutyl ketone
FAAS = flame atomic absorption spectroscopy
ICP-OES = inductively coupled plasma–optical emission spectroscopy
MIBK = methyl isobutyl ketone

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“There is no such thing as 'un-assayable gold by the fire assay method,'" John Marsden, The Chemistry of Gold Extraction.

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Analytical Services

Geologic Materials

hazen-research-admin — Fri, 07 Jun 2013 20:35:56 +0000

Our Analytical Services support a wide variety of mineral projects, from exploration and assessment of prospects to process development, pilot plant operation, and final product characterization. Comprehensive metallurgical auditing of commercial operations is one of our specialized services. Modern instrumentation, classical wet chemical methods, and fire assaying are all used, depending on client requirements and the particular materials involved.

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Our Analytical Services support a wide variety of mineral projects.

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Analytical Services

Radiochemistry

hazen-research-admin — Thu, 06 Jun 2013 17:04:22 +0000

91�� has provided analytical services for the uranium mining and processing industries since the early 1960s. An outgrowth of this activity has been the Radiochemistry Laboratory, which specializes in the determination of the long half-life radionuclides of the uranium and thorium decay series and radionuclides produced from nuclear power generation. These isotopes emit alpha, beta, and gamma radiation.

We hold the State of Colorado certification to perform radiochemical testing on drinking water from domestic and foreign sources. Typical parameters include gross alpha/beta, gross gamma, radium-226, radium-228, radon in water, thorium, and uranium. Most of these analyses can be performed on waters, soils, and ores.

View the 91�� Analytical Fee Schedule or Contact Us for additional details.

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91�� maintains a radioactive materials license with the Nuclear Regulatory Commission that allows for short-term storage of samples and feedstock material for experimental purposes.

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Analytical Services

Analytical Laboratories

hazen-research-admin — Mon, 03 Jun 2013 21:43:05 +0000

91�� Research provides a wide selection of analytical services. Our clients include public and private organizations worldwide as well as individuals. We understand how important it is that your processes are safe and efficient, therefore we ensure that our analyses are accurate, timely, and precise.

In addition to our standard analytical services, our laboratories also customize established analytical methods for difficult-to-analyze materials in support of special projects, process research, and pilot plants. These processes are unique; please Contact us to talk about your specific analyses needs.

Our laboratories can characterize the properties of most materials. We have performed analyses on materials including minerals and metals, precious metals, brines, drinking water, paint, gases, and radioactive materials. Our fuels analysis capabilities include analyses of the following: ultimate–proximate, ash, ash fusion, elemental ash, Btu, and other methods for characterizing coal, biomass, and similar materials.

The labs will work with other 91�� groups using the following techniques and instruments:

Inductively coupled plasma–optical emission spectroscopy (ICP–OES)
Inductively coupled plasma–mass spectrometry (ICP–MS)
Atomic absorption spectroscopy (AAS)
X-ray fluorescence (XRF)
X-ray diffraction (XRD)
QEMSCAN
Electron microprobe analysis
High-resolution SEM and microanalysis
Thermogravimetric analysis (TGA)

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91�� maintains a commercial analytical laboratory in Colorado offering services to industry and private parties.

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91���� Research - Analytical Laboratories

Quality Control

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Sample Preparation

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Fuels

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Precious Metals/Fire Assaying

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Geologic Materials

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Radiochemistry

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Analytical Laboratories

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91�� Research - Analytical Laboratories

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