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SPEX SAMPLEPREP

SPEX SamplePrep, a brand of SPEX CertiPrep Group, is a manufacturer of laboratory sample preparation equipment headquartered in Metuchen, New Jersey, USA. The brand has been in operation since the 1950s, originally focusing on spectrochemical standards and later expanding into sample grinding and homogenization technologies. SPEX SamplePrep is recognized for its range of cryogenic grinding mills, ball mills, homogenizers, and associated accessories designed for analytical laboratories, materials testing, and research facilities. The product line includes the 6875 series cryogenic grinders (available in 5 mL, 100 mL, and 200 mL capacities), which operate at a maximum speed of 15 RPM and accept grain sizes up to 10 mm. These mills feature dual grinding and cooling chambers, with manual or automated liquid nitrogen fill options, and are powered by 115V AC. The brand also supplies stainless steel grinding balls (MPN 2155) compatible with Geno/Grinder homogenizers, as well as consumables such as foam vial racks (MPN 2191), silicone rubber sealing mats (MPN 2211), and plastic nesting plates (MPN 1690T). SPEX SamplePrep equipment is built to standard laboratory electrical and mechanical specifications, with no IP ratings typically cited for benchtop units. 3G Electric stocks a selection of SPEX SamplePrep mills, homogenizer accessories, and grinding media, supporting procurement for laboratories requiring reproducible particle size reduction for techniques like XRF, IR, and wet chemistry. The brand's equipment is suited for applications involving hard, brittle, or temperature-sensitive materials, including polymers, pharmaceuticals, and geological samples. 3G Electric provides logistics support for these items, ensuring availability for global shipment from its Singapore base.

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About SPEX SAMPLEPREP

SPEX SamplePrep, a brand of SPEX CertiPrep Group, is a manufacturer of laboratory sample preparation equipment headquartered in Metuchen, New Jersey, USA. The brand has been in operation since the 1950s, originally focusing on spectrochemical standards and later expanding into sample grinding and homogenization technologies. SPEX SamplePrep is recognized for its range of cryogenic grinding mills, ball mills, homogenizers, and associated accessories designed for analytical laboratories, materials testing, and research facilities. The product line includes the 6875 series cryogenic grinders (available in 5 mL, 100 mL, and 200 mL capacities), which operate at a maximum speed of 15 RPM and accept grain sizes up to 10 mm. These mills feature dual grinding and cooling chambers, with manual or automated liquid nitrogen fill options, and are powered by 115V AC. The brand also supplies stainless steel grinding balls (MPN 2155) compatible with Geno/Grinder homogenizers, as well as consumables such as foam vial racks (MPN 2191), silicone rubber sealing mats (MPN 2211), and plastic nesting plates (MPN 1690T). SPEX SamplePrep equipment is built to standard laboratory electrical and mechanical specifications, with no IP ratings typically cited for benchtop units. 3G Electric stocks a selection of SPEX SamplePrep mills, homogenizer accessories, and grinding media, supporting procurement for laboratories requiring reproducible particle size reduction for techniques like XRF, IR, and wet chemistry. The brand's equipment is suited for applications involving hard, brittle, or temperature-sensitive materials, including polymers, pharmaceuticals, and geological samples. 3G Electric provides logistics support for these items, ensuring availability for global shipment from its Singapore base.

Common Applications

  • Pharmaceutical research — SPEX SamplePrep 6875-115 cryogenic grinder for milling temperature-sensitive drug compounds
  • Geological analysis — SPEX SamplePrep 6875A-115 automated fill grinder for pulverizing rock samples for XRF
  • Polymer testing — SPEX SamplePrep 6775-115 cryogenic mill for grinding elastomers and plastics at low temperatures
  • Biological sample homogenization — SPEX SamplePrep stainless steel grinding balls (MPN 2155) in Geno/Grinder for tissue lysis
  • Quality control in food labs — SPEX SamplePrep 6875D-115 200 mL grinder for cryogenic milling of spices and grains
  • Environmental sample prep — SPEX SamplePrep foam vial rack (MPN 2191) for organizing soil extract vials prior to analysis

Frequently asked questions

Common questions about SPEX SAMPLEPREP from 3G Electric.

What are the key differences between the SPEX SamplePrep 6875-115 and 6875A-115 cryogenic grinders?

The SPEX SamplePrep 6875-115 and 6875A-115 both have a 100 mL capacity, dual grinding and cooling chambers, and a maximum speed of 15 RPM with a 10 mm grain size limit. The primary difference is the fill operation: the 6875-115 uses manual fill, while the 6875A-115 features automated fill. Both operate on 115V AC. The automated fill option reduces operator intervention during liquid nitrogen addition, which can improve consistency in sample processing.

Which SPEX SamplePrep grinding balls are compatible with Geno/Grinder homogenizers?

The SPEX SamplePrep stainless steel grinding balls (MPN 2155) are designed for use with Spex SamplePrep Geno/Grinder homogenizers, specifically compatible with model numbers 2230, 2241, and 3116. These balls are made of stainless steel and are intended for high-throughput homogenization of biological and material samples. They are not interchangeable with other mill types without verifying dimensions.

What is the maximum grain size that can be processed in the SPEX SamplePrep 6775-115 cryogenic grinder?

The SPEX SamplePrep 6775-115 cryogenic grinder has a maximum grain size of 7 mm. It has a 5 mL capacity and operates at a maximum speed of 15 RPM with dual grinding and cooling chambers. This unit is suited for small-volume samples requiring fine grinding at cryogenic temperatures, such as polymers or soft materials that are difficult to mill at ambient conditions.

Are SPEX SamplePrep cryogenic grinders available in voltage options other than 115V AC?

Based on the product listings available through 3G Electric, the SPEX SamplePrep cryogenic grinders (models 6775-115, 6875-115, 6875A-115, and 6875D-115) are specified for 115V AC operation. SPEX SamplePrep may offer 230V versions for international markets, but those are not listed in the current inventory. For voltage requirements outside 115V AC, contact 3G Electric to verify availability or alternative configurations.

What is the purpose of the SPEX SamplePrep sealing mat (MPN 2211)?

The SPEX SamplePrep sealing mat (MPN 2211) is a silicone rubber cap mat designed for use with the model 2210 homogenizer. It provides a seal over sample vials during homogenization to prevent leakage and cross-contamination. The silicone rubber material offers chemical resistance and flexibility, ensuring a tight fit for multiple vial sizes. It is a consumable accessory that should be replaced periodically based on usage.

Can the SPEX SamplePrep foam vial rack (MPN 2191) hold different vial sizes?

The SPEX SamplePrep foam vial rack (MPN 2191) is a white foam rack with 48 compartments designed to hold 48 vials. The rack is typically configured for standard vial sizes used in SPEX SamplePrep homogenizers, such as 2 mL or 5 mL vials. It is not adjustable for different diameters, so verify vial dimensions against the rack's compartment size before use. The foam material provides cushioning during transport and storage.