Humidity Cell Testing

by | Apr 3, 2020 | News, Soil Analyses

Humidity Cells are a kinetic test that subjects a soil sample to varying conditions as part of an advanced weathering technique. This technique involves flooding the sample, collecting leachate, and aerating it using extremely high and low relative humidity air in weekly cycles for at least 20 weeks. The rock chemistry changes in response to these stimuli and is observed in the analysis of the weekly leachates that are produced. Acid generating potential and neutralizing potential is observed as the sample ages as well as the overall water quality of the leachate. Combined with the data from static and mineralogical tests, the Humidity Cell test offered by SVL provides a powerful tool for clients to use in their predictive modeling of Acid Rock Drainage (ARD) conditions.

Humidity Cells frequently run 20 weeks. Your unique project can customize the duration, analytical tests, and specifics of the humidity cell test. Humidity cell testing is performed in accordance with ASTM D5744-07e1 and following all accreditation quality standards. You can have confidence that our years of expertise in mining analysis will help your project be a success.

Join us for more information

about the environmental laboratory industry, plus events we’re attending and hosting.

Significant Figures Use by Laboratories

What determines the amount of numbers you see on your report? Each test that we do has a level of sensitivity associated with it.  Tests that you can do by visual inspection have the lowest sensitivity and are usually reported in whole numbers in a range of say 1 to...

New Drinking Water COC for Coliform Bacteria Available

We’ve updated our Drinking Water COC/Submittal Form for Coliform Bacteria. You can download it off of our  Resources page.    

The Argument on “Total” Metals

Why is there still an argument about which digestion method should be reported as “total” metals? When you’re looking at an old QAPP, permit or analytical report, you might have noticed that there were different listings for how the metals were to be identified and...

Exciting changes: a new location

After 16 years in our current location, we a relocating our Coeur d'Alene laboratory service to our Kellogg location and establishing a new sample drop-off location in Hayden. Here are some important dates to keep in mind: March 18, 2021: The last day to drop samples...

What to Do With a Result Above Your Permit Limit

When people come to SVL Analytical, they’re often looking for data to show that they’re in compliance with the applicable regulations or permits. What happens when the data you get back isn’t in compliance?  That can be a stressful situation and we want to help...

Reading your Report

If you’re not familiar with the format and terminology, your sample’s analytical report may be confusing. Here are some explanations to get you started.

My water tastes funny, what should I test for?

There are many reasons for household water to have an unusual odor or taste.

New Drinking Water COC Available

We’ve updated our Drinking Water (Chemistry) COC. You can download it off of our Resources page.

New Spectrometer at SVL

SVL is proud to announce our latest laboratory equipment acquisition: the? Agilent Model 5110 ICP-OES Spectrometer. The Agilent 5110 ICP-OES Instrument features unique Dichroic Spectral Combiner (DSC) technology that enables synchronous radial and axial measurements....

Field Filtering Samples for Dissolved Metals Analysis

To help our clients in the selection of field filtering apparatus and supplies we provide the following information and links. A peristaltic pump (also called a circulating pump or vein pump) and appropriate hosing is required with a 0.45? ?filter capsule and sample...