BASE INFORMATION

Pumice Grades and Types

Hess Pumice produces a wide range of pumice grades for industrial processes and consumer products. Three processing plants allow us to produce a variety of grade and grade blends. Production capability combined with six-plus decades of expertise means we can provide a pumice product to meet almost any need.

ON SPEC. ON TIME. We engage rigorous product testing measures to ensure each grade meets application spec. Every time. Our logistical experience in moving pumice world-wide means we can deliver pumice where it needs to be when it needs to be there.

CUSTOM GRADES. If one of the common standard grades listed below don’t fit the need, we also have several specialized grades that may work. If not, we’ll work up a custom grade to meet the specifications.

PRODUCTION TURNAROUND. Typical production turnaround for most pumice grades is two weeks. Please plan accordingly.

PUMICE STORAGE. Keep stock dry and protected from the elements until use.

Processed Pumice Grades

STANDARD GRADES AND PACKAGING
HP GRADE LBS / BAG0000 BAGS / PALLET LBS / PALLET0
linked TDS F 45 48 2400
linked TDS FF 45 48 2160
linked TDS FFF | FFFD 45 48 2160
linked TDS FFFF 45 48 2160
linked TDS -325 (HessPozz) 45 48 2160
linked TDS 0 45 48 2160
linked TDS 0•1/2 | 0•1/2D 45 48 2160
linked TDS 0•3/4 | 0•3/4D 45 48 2160
linked TDS 1/0 45 48 2160
linked TDS 2/0 45 48 2160
linked TDS 3/0 | 3/0N 45 48 2160
linked TDS 3/0B 25 72 1800
linked TDS 1/2 | 1/2N 45 48 2160
linked TDS 1 45 48 2160
linked TDS 1•1/2 45 48 2160
HP GRADE LBS / BAG0000 BAGS / PALLET LBS / PALLET0
linked TDS 2 | 2S 40 48 1920
linked TDS 3 40 48 1920
linked TDS 5 35 54 1890
linked TDS 7 35 54 1890
linked TDS 10 35 54 1890
linked TDS 8/12B 45 48 2160
linked TDS 10 Heavies 2000 1 2000
linked TDS 3/8 x #8 50 36 1800
linked TDS 5/16C 50 36 1800
linked TDS 3/4 x 3/8 50 36 1800
linked TDS 3/4 x 5/16 50 36 1800
linked TDS 1 x 3/4 50 36 1800

Pumice Mine Grades

Our mine grades are typically comprised of 98% pumice and 2% other igneous minerals, which are not removed through our mining processes. Mine grades are available in palletized supersacks or bulk loaded into trucks/rail cars.

MINE GRADES AND PACKAGING
HP GRADE LBS / BAG0000 BAGS / PALLET LBS / PALLET0
linked TDS 1/8 Fines MN 2000 1 2000
linked TDS 3/8 Fines MN 2000 1 2000
linked TDS 3/8 x #8 MN 2000 1 2000
linked TDS 3/4 x 5/16 MN 2000 1 2000
HP GRADE BULK LOAD
Mine grades are also sold on a per-ton basis. Loading hours are Monday thru Friday, 8:30 am – 3:30 pm. Product can be loaded bulk into trucks or rail cars. NOTE: Pumice, on a per-ton basis, will yield approximately 2.3 times the volume of sand or gravel.
linked TDS 1/8 Fines MN 1600 lbs/cubic yard
linked TDS 3/8 Fines MN 1550 lbs/cubic yard
linked TDS 3/8 x #8 MN 1400 lbs/cubic yard
linked TDS 3/4 x 5/16 MN 1300 lbs/cubic yard
linked TDS 3/4 x 3/8 MN 1300 lbs/cubic yard
7/16 MN 1550 lbs/cubic yard
linked TDS 1 x 3/4 MN 1300 lbs/cubic yard

Micronized Pumice Grades

Our Non-Crystalline Silica (NCS) ultrafine grades were developed in response to environmental and health concerns with Crystalline Silica (CS) and provides an effective replacement for CS, Minex® and SafSil® in industrial coatings, paints, stains, rubber compounds, plastics and fiberglass. Pumice is an amorphous (no crystalline structure) aluminum silicate. But it is the distinctive, sponge-like structure that make the Hess NCS grades more than mere fillers—the frothy particles fully integrate and mesh into the polymer networks of various coatings, resulting in a much more functionally useful, reinforced pigment than is possible with typical platey extenders.

NCS GRADES AND PACKAGING
HP GRADE LBS / BAG0000 BAGS / PALLET LBS / PALLET0
linked TDS NCS-3 50 42 2100
TDS NCS-5 50 42 2100
TDS NCS-8 50 42 2100
TDS NCS-10 50 42 2100
TDS NCS-12 50 42 2100
NOTE: Grade name numbers represent average particle size (in microns).

CONTACT US

We know pumice. We’ll answer your questions, help determine the ideal grade for your needs, get you sample grades for testing, or help figure out the logistics of getting pumice to you.

R&D: (208) 766-4777 x111
rd@hesspumice.com

Sales: (208) 766-4777
salesteam@hesspumice.com

FIND US

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Offices, Shipping Docks, Mine

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