Attachment 2 Specifications - Grinding Equipment AEK.pdf
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- Attached to
- Grinding Equipment- USDA, ARS, Burlington, VT Federal contract opportunity
- Solicitation number
- 1232SA26Q0246
About this file
Specifications Summary: Purchase of Sample Grinding and Analysis Equipment
This is a specifications document for a federal equipment procurement by the USDA-ARS requiring the delivery of three integrated systems for sample preparation and analysis in agricultural research. The contractor must provide an impeller grinding mill, a blade grinding mill, and a NIRS spectrometer designed for processing plant, soil, and manure samples to support crop and animal research, forage and small grain studies, animal behavior and pasture studies, and soil health studies. Delivery is required within 180 days of award to USDA-ARS, 105 Carrigan Drive, Patrick Leahy Building Room 212, Burlington, VT 05405.
The impeller grinding mill must process dry samples up to 15% moisture and 10% fat at a grinding rate of 4 g/s with 10,000 rpm impeller speed, capable of handling sample sizes up to 10mm (small inlet) and 40mm (large inlet), producing fine and uniform grist with multiple screen size options (0.3mm through 2mm). The blade grinding mill must handle high-moisture, high-fat, and fibrous samples at 16,000 rpm with grinding times of 2-10 seconds and sample sizes of 30-200ml. The NIRS spectrometer must operate at wavelengths of 850-2500 nanometers in reflectance mode with Silicon and Lead Sulfide detectors, analysis time under one minute per sample, wavelength precision <0.005nm and accuracy <0.05nm, and must include dedicated software compatible with Dell 64-bit Windows 10 Pro computers supporting PLS, mPLS, MLR, and discriminant analysis with real-time outlier detection. All equipment must include specified accessories (sample cups, ring cup holders, cup extensions), safety features (microswitch, motor brake/solenoid), and a minimum one-year full parts and labor warranty with 24-hour technical support response times during normal business hours.
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| File | Type | Posted |
|---|---|---|
| Attachment 1 Solicitation Terms and Conditions 1232SA26Q0246.pdf |
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Specifications Project: Purchase of Sample Grinding and Analysis Equipment
GENERAL INFORMATION
1.0 Scope of Work:
Provide cyclone/impeller grinding mill, blade grinding mill, and NIRS spectrometer for preparing plant, soil, and manure samples for subsequent quality and nutrient analysis to aid in crop and animal research. Will be used for forage and small grain studies, animal behavior and pasture studies, and soil health studies.
CONTRACTOR REQUIREMENTS
2.0 Technical Requirements/Tasks:
• Impeller grinding mill:
o Sample types: Dry samples up to 15% moisture and 10% fat such as:
Grains, cereals, seeds, hay, straw (dried and cut to 2-3cm), silage (dried and cut to 2-3cm), leaves, vegetables and fruit.
o Sample size: Up to at least 10mm for small inlet, large inlet 40mm o Grinding rate/time: 4 g/s o Grinding speed: Impeller 10.000 rpm o Particle size: Fine and Uniform grist o Safety: Microswitch, motor brake o Low cross contamination o Range of screen sizes: 0.3 mm, 0.5 mm, 0.8 mm, 1 mm (0.5 and 1.0 is included) and 2 mm o Glass sample bottles, sizes 350 ml 4 pcs/pkg and 40 pcs/pkg o Dust collection options:
Dust pads Dust collection with external connection o Grinding ring options:
Grinding ring for hard samples Grinding ring for heavy metals Grinding ring standard, Tungsten carbide o Impeller options:
Standard impeller, aluminum Nickel plated impeller, for mineral analysis o Must include at least one ring cup holder
• Blade grinding mill:
o Sample types: High-moisture, high-fat and fibrous samples, such as:
Grains, cereals, beans, oilseeds, nuts, peas – wet and dry, maize (corn) - wet and dry, vegetables and fruit.
o Sample size: At least 30-200 ml o Grinding rate/time: 2 to 10 seconds o Grinding speed: Blade 16.000 rpm o Timer control o Safety: Microswitch, solenoid o Rotor Blade options:
Rotor Blade Sharp – Standard Rotor Blade for Small Sample Volumes Rotor Blade for Pellets
• NIRS Spectrometer:
o Wavelength Range: At minimum 850 – 2500 nm (nanometers) and operate in reflectance measurement mode.
o Silicon (800-1100 nm) and Lead Sulfide (1100-2500 nm) detectors. Signal to noise (noise = root mean square for 10 co-added, 10 second scans) less than 50 micro absorbance units (au) in the 400-700 region and less than 20 au in the 700-2500 region.
o Data interval/spectral resolution: minimum of 0.5 nm o Analysis time: less than 1 minute per sample o Wavelength precision: <0.005 nm o Wavelength accuracy: <0.05 nm o Optical bandwidth: 8.75 +/- 0.1 nm o Absorbance range: </= 2 au o Standardize to an internal or external wavelength reference (SRM-1920a
NIST)
o Standardize to an external reference correction standard and provide a virtual 100% reflection reference at each data point to serve as a true spectroscopic reference.
o Must include at least two different sample cup sizes; one small cup for 10- 20 grams of sample, and one ring cup for 5 grams of sample.
o Must include at least one ring cup holder.
o Must include one large cup extension for forage samples.
o Must have a stable platform in varying climates (5 to 40 degrees C, less than 93% humidity, and dust protection).
o Must include a separate personal computer and monitor.
o On-site staff must be able to change lamp when required, when trained.
Must use either a 35W or 50W lamp.
o Software specifications:
Software must be password protected and provide flexibility in set-up.
Software must be compatible with a Dell 64-bit computer 3420 XVTO Windows 10 Pro
Software must support PLS, mPLS, MLR, discriminant analysis and Local predictions.
Software must have real-time outlier detection for each constituent.
Software must be selecting and exporting individual subscans of each sample to a calibration file.
Software must support scheduled diagnostics.
Software must support Smart Start of the instrument.
Software must indicate when lamp hours are 500 hours before expected lifetime ends.
o A phone number for technical support must be provided.
o Phone and/or online support must be available during normal business hours (8-4pm EST).
o Must provide a minimum of one-year full parts and labor warranty.
o All technical support request calls must receive a response within 24 hours.
3.0 Deliverables / Schedule:
Delivery to USDA-ARS, 105 Carrigan Drive, Patrick Leahy Building Room 212, Burlington, VT 05405 within 180 days of award.
| CONTRACTOR REQUIREMENTS |
| 2.0 Technical Requirements/Tasks: |
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