---
title: FAQs | EMSL Knowledge Base
description: INTERNAL USE
---

[Skip to content](https://knowledge.emsl.com/en/emsl/knowlegebase/faqs#main-content)

English

Show submenu for translations

![EMSL Logo Diamond](https://knowledge.emsl.com/hs-fs/hubfs/EMSL%20Logo%20Diamond.jpg?width=150&height=146&name=EMSL%20Logo%20Diamond.jpg)

Open main navigation

Close main navigation

- English
  
  Show submenu for translations
- Go to emsl.com

 Go to emsl.com

 Hello. How can we help you?

- There are no suggestions because the search field is empty.

1. [EMSL Knowledge Base](https://knowledge.emsl.com/en/emsl/knowlegebase)
2. [FAQs](https://knowledge.emsl.com/en/emsl/knowlegebase/faqs)

# FAQs

 INTERNAL USE

## Lead & Metals/Chemistry/Industrial Hygiene

- [Can we report air results as a TWA and what information is required to do so?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-we-report-air-results-as-a-twa-and-what-information-is-required-to-do-so)
- [Are we able to meet the EPA required reporting limit of 50% of the action level for lead in dust wipes?](https://knowledge.emsl.com/en/emsl/knowlegebase/are-we-able-to-meet-the-epa-required-reporting-limit-of-50-of-the-action-level-for-lead-in-dust-wipes)
- [Can we analyze for precious metals such as platinum & rhodium on air samples by ICP?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-we-analyze-for-precious-metals-such-as-platinum-rhodium-on-air-samples-by-icp)
- [Can we test Taconite pellets for Ferrous metals?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-we-test-taconite-pellets-for-ferrous-metals)
- [Can we analyze a playground surface made of shredded tires for heavy metals?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-we-analyze-a-playground-surface-made-of-shredded-tires-for-heavy-metals)
- [Can we test "Lynx" wipes for lead?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-we-test-lynx-wipes-for-lead)
- [Can you cut a ghost wipe in half to take 2 samples?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-you-cut-a-ghost-wipe-in-half-to-take-2-samples)
- [Can we analyze for ferrous iron in water?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-we-analyze-for-ferrous-iron-in-water)
- [Can we analyze silverware for lead. Would the sample would be destroyed?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-we-analyze-silverware-for-lead.-would-the-sample-would-be-destroyed)
- [Can we analyze soil samples by ICP-MS, also include % moisture, and then report both wet and dry weight results?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-we-analyze-soil-samples-by-icp-ms-also-include-moisture-and-then-report-both-wet-and-dry-weight-results)
- [Can we analyze calcium on a solution consisting of 35% Calcium chloride?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-we-analyze-calcium-on-a-solution-consisting-of-35-calcium-chloride)
- [Is there a PEL for lead in paint chips for the state of GA?](https://knowledge.emsl.com/en/emsl/knowlegebase/is-there-a-pel-for-lead-in-paint-chips-for-the-state-of-ga)
- [A customer needs to reach an RL of 200 ug/ft2 and 40 ug/ft2 and wants to verify the recommended or minimum sampling areas.](https://knowledge.emsl.com/en/emsl/knowlegebase/a-customer-needs-to-reach-an-rl-of-200-ug/ft2-and-40-ug/ft2-and-wants-to-verify-the-recommended-or-minimum-sampling-areas)
- [Is there a hold time for a lead wipe sample once collected?](https://knowledge.emsl.com/en/emsl/knowlegebase/is-there-a-hold-time-for-a-lead-wipe-sample-once-collected)
- [Can we test a wire mesh sample for total lead content?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-we-test-a-wire-mesh-sample-for-total-lead-content)
- [For lead in air via NIOSH 7082 what volume is required to get to \<30 micrograms per cubic meter, the current action level?](https://knowledge.emsl.com/en/emsl/knowlegebase/for-lead-in-air-via-niosh-7082-what-volume-is-required-to-get-to-30-micrograms-per-cubic-meter-the-current-action-level)

See less ▼

## Microbiology

- [What method do we use for analyzing spore traps?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-method-do-we-use-for-analyzing-spore-traps)
- [What is the flow rate for Air-O-Cell?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-flow-rate-for-air-o-cell)
- [What are the benefits of using AIR-O-CELL cassettes for sampling total spore counts?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-are-the-benefits-of-using-air-o-cell-cassettes-for-sampling-total-spore-counts)
- [What are the benefits of using Air-O-Cell cassettes?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-are-the-benefits-of-using-air-o-cell-cassettes)
- [What is the recommended sampling duration when using Air-O-Cells?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-recommended-sampling-duration-when-using-air-o-cells)
- [Are there special instructions for shipping Air-O-Cell cassettes?](https://knowledge.emsl.com/en/emsl/knowlegebase/are-there-special-instructions-for-shipping-air-o-cell-cassettes)
- [What is the correct flowrate for Micro-5 cassettes?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-correct-flowrate-for-micro-5-cassettes)
- [What is the recommended sampling duration when using Micro-5 cassettes?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-recommended-sampling-duration-when-using-micro-5-cassettes)
- [Are there special storage instructions for Micro-5 cassettes?](https://knowledge.emsl.com/en/emsl/knowlegebase/are-there-special-storage-instructions-for-micro-5-cassettes)
- [What is the correct flowrate for MoldSnap cassettes?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-correct-flowrate-for-moldsnap-cassettes)
- [What is the recommended sampling duration when using MoldSnap cassettes?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-recommended-sampling-duration-when-using-moldsnap-cassettes)
- [Are there special storage instructions for MoldSnap cassettes?](https://knowledge.emsl.com/en/emsl/knowlegebase/are-there-special-storage-instructions-for-moldsnap-cassettes)
- [What is the correct flow rate for Allergenco- D cassettes?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-correct-flow-rate-for-allergenco-d-cassettes)
- [What is the recommended sampling duration when using Allergenco- D cassettes?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-recommended-sampling-duration-when-using-allergenco-d-cassettes)
- [What is the recommended media when sampling fungi?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-recommended-media-when-sampling-fungi)
- [What is the recommended media when sampling fungi in dry areas?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-recommended-media-when-sampling-fungi-in-dry-areas)
- [What is the recommended media when sampling Stachybotrys sp.?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-recommended-media-when-sampling-stachybotrys-sp)
- [What is the recommended media when sampling bacteria?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-recommended-media-when-sampling-bacteria)
- [What is the recommended media when sampling Gram negative bacteria?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-recommended-media-when-sampling-gram-negative-bacteria)
- [Are there any special instructions when handling agar plates?](https://knowledge.emsl.com/en/emsl/knowlegebase/are-there-any-special-instructions-when-handling-agar-plates)
- [During sampling are gloves necessary when handling agar plates?](https://knowledge.emsl.com/en/emsl/knowlegebase/during-sampling-are-gloves-necessary-when-handling-agar-plates)
- [What instruments are used with culture plates to take viable mold samples?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-instruments-are-used-with-culture-plates-to-take-viable-mold-samples)
- [What is direct examination?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-direct-examination)
- [What materials can be used for direct examination?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-materials-can-be-used-for-direct-examination)
- [What does ERMI stand for?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-does-ermi-stand-for)
- [Who developed ERMI?](https://knowledge.emsl.com/en/emsl/knowlegebase/who-developed-ermi)
- [What is the point of using ERMI?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-point-of-using-emri)
- [What are the recommended sampling locations for residential sampling?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-are-the-recommended-sampling-locations-for-residential-sampling)
- [How much of a sample is required for ERMI?](https://knowledge.emsl.com/en/emsl/knowlegebase/how-much-of-a-sample-is-required-for-ermi)
- [How much time is recommended when sampling ERMI?](https://knowledge.emsl.com/en/emsl/knowlegebase/how-much-time-is-recommended-when-sampling-ermi)
- [What are the Sampling Locations for ERMI?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-are-the-sampling-locations-for-ermi)
- [What is the sampling procedure for ERMI?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-sampling-procedure-for-ermi)
- [What is PCR?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-pcr)
- [Why should I use PCR?](https://knowledge.emsl.com/en/emsl/knowlegebase/why-should-i-use-pcr)
- [What types of media can be used to sample PCR?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-types-of-media-can-be-used-to-sample-pcr)
- [What are the Sampling Instructions for PCR?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-are-the-sampling-instructions-for-pcr)
- [Can you analyze multiple allergens from a single dust sample?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-you-analyze-multiple-allergens-from-a-single-dust-sample)
- [How do you sample via a Dust Collector Kit? Product # 8715600](https://knowledge.emsl.com/en/emsl/knowlegebase/how-do-you-sample-via-a-dust-collector-kit-product-8715600)
- [Can we test for Latex in Air?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-we-test-for-latex-in-air)
- [What is the recommended bottle when sampling Total Coliform, E. coli, & Fecal Coliform in water.](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-recommended-bottle-when-sampling-total-coliform-e.-coli-fecal-coliform-in-water)
- [If a client is in driving vicinity of the testing lab, performs sampling, and drives them to the lab, is there a hold time that they can get here by before needing to chill their samples?](https://knowledge.emsl.com/en/emsl/knowlegebase/if-a-client-is-in-driving-vicinity-of-the-testing-lab-performs-sampling-and-drives-them-to-the-lab-is-there-a-hold-time-that-they-can-get-here-1722459532955)
- [What is sampling procedure for Distribution or Sink Faucet Sample?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-sampling-procedure-for-distribution-or-sink-faucet-sample)
- [Are there any special shipping instructions for Total Coliform, E. coli & Fecal Coliform?](https://knowledge.emsl.com/en/emsl/knowlegebase/are-there-any-special-shipping-instructions-for-total-coliform-e.-coli-fecal-coliform)
- [What are instructions for taking a Well Sample?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-are-instructions-for-taking-a-well-sample)
- [What are the hold times for Total Coliform, E. coli, & Fecal Coliform?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-are-the-hold-times-for-total-coliform-e.-coli-fecal-coliform)
- [What is Legionella?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-legionella)
- [What are the growth requirements for Legionella?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-are-the-growth-requirements-for-legionella)
- [How much water is needed for Legionella testing?](https://knowledge.emsl.com/en/emsl/knowlegebase/how-much-water-is-needed-for-legionella-testing)
- [Are preservatives required for 250ml non-potable Legionella samples?](https://knowledge.emsl.com/en/emsl/knowlegebase/are-preservatives-required-for-250ml-non-potable-legionella-samples)
- [What are the sample Collection and Shipping Procedures for Legionella?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-are-the-sample-collection-and-shipping-procedures-for-legionella)
- [Where can you find Legionella?](https://knowledge.emsl.com/en/emsl/knowlegebase/where-can-you-find-legionella)
- [Where are Cooling Tower Sampling Locations?](https://knowledge.emsl.com/en/emsl/knowlegebase/where-are-cooling-tower-sampling-locations)
- [Where are potable Water Sampling Locations?](https://knowledge.emsl.com/en/emsl/knowlegebase/where-are-potable-water-sampling-locations)
- [Are there monitoring guidelines for Legionella?](https://knowledge.emsl.com/en/emsl/knowlegebase/are-there-monitoring-guidelines-for-legionella)
- [What is MRSA (M133)?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-mrsa-m133)
- [How do you collect MRSA samples?](https://knowledge.emsl.com/en/emsl/knowlegebase/how-do-you-collect-mrsa-samples)
- [What is the recommended media when sampling for MRSA?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-recommended-media-when-sampling-for-mrsa)
- [If someone is conducting a sampling confirmation of an apartment that has been cleaned after a MRSA case, how many swab samples should you collect?](https://knowledge.emsl.com/en/emsl/knowlegebase/if-someone-is-conducting-a-sampling-confirmation-of-an-apartment-that-has-been-cleaned-after-a-mrsa-case-how-many-swab-samples-should-you-collect)
- [Is something like bulk composite sampling more viable to cover more than just a single locations (ie. As opposed to sampling a door knob you sample a few spots to clear a room?)](https://knowledge.emsl.com/en/emsl/knowlegebase/is-something-like-bulk-composite-sampling-more-viable-to-cover-more-than-just-a-single-locations-ie.-as-opposed-to-sampling-a-door-knob-you-sam-1722529035006)
- [Do you know if people typically conduct any QA/QC sampling for something like this? (MRSA)](https://knowledge.emsl.com/en/emsl/knowlegebase/do-you-know-if-people-typically-conduct-any-qa/qc-sampling-for-something-like-this-mrsa)
- [Should MRSA samples be sent on ice?](https://knowledge.emsl.com/en/emsl/knowlegebase/should-mrsa-samples-be-sent-on-ice)
- [What is sampling procedure for MRSA?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-sampling-procedure-for-mrsa)
- [Are there special shipping instructions for MRSA samples?](https://knowledge.emsl.com/en/emsl/knowlegebase/are-there-special-shipping-instructions-for-mrsa-samples)
- [Can you culture MRSA samples?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-you-culture-mrsa-samples)
- [What are endotoxins?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-are-endotoxins)
- [Where can endotoxins be found?](https://knowledge.emsl.com/en/emsl/knowlegebase/where-can-endotoxins-be-found)
- [What cassettes are required to test for endotoxins in the air?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-cassettes-are-required-to-test-for-endotoxins-in-the-air)
- [Are there any acceptable levels of endotoxin levels?](https://knowledge.emsl.com/en/emsl/knowlegebase/are-there-any-acceptable-levels-of-endotoxin-levels)
- [What is the recommended media for endotoxin sampling?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-recommended-media-for-endotoxin-sampling)
- [What is the Sampling Procedure for Endotoxins?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-sampling-procedure-for-endotoxins)
- [What are bacteria?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-are-bacteria)
- [What is a gram stain (M009)?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-a-gram-stain-m009)
- [What is Pseudomonas aeruginosa detection M012?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-pseudomonas-aeruginosa-detection-m012)
- [Can we test for mycobacteria?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-we-test-for-mycobacteria)
- [Can we test for Tuberculosis?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-we-test-for-tuberculosis)
- [What is the sampling procedure for Mycobacteria?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-sampling-procedure-for-mycobacteria)
- [What is the Media for Fungal?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-culturable-media)
- [What is the General Media for Air Sampling of Culturable Bacteria and Fungi?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-general-media-for-air-sampling-of-culturable-bacteria-and-fungi)
- [What is Bacterial Culture Media?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-bacterial-culture-media)
- [How do you sample with a Filter Cassette? (Product #8715314)](https://knowledge.emsl.com/en/emsl/knowlegebase/how-do-you-sample-with-a-filter-cassette-product-8715314)
- [What percentage of Cryptosporidium positive slides actually contain pathogenic types?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-percentage-of-cryptosporidium-positive-slides-actually-contain-pathogenic-types)
- [How can positive Cryptosporidium slides be tested for human pathogens?](https://knowledge.emsl.com/en/emsl/knowlegebase/how-can-positive-cryptosporidium-slides-be-tested-for-human-pathogens)
- [Should we be testing our Publicly Owned Water Supplies?](https://knowledge.emsl.com/en/emsl/knowlegebase/should-we-be-testing-our-publicly-owned-water-supplies)
- [What are the differences in our species ID for M006 and M432? Can they be collected with an Andersen Impactor?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-are-the-differences-in-our-species-id-for-m006-and-m432-can-they-be-collected-with-an-andersen-impactor)
- [I have a home owner looking to test water for H-Pylori and I wanted to see if there are specific bottles needed any what sizes are needed for the M207](https://knowledge.emsl.com/en/emsl/knowlegebase/i-have-a-home-owner-looking-to-test-water-for-h-pylori-and-i-wanted-to-see-if-there-are-specific-bottles-needed-any-what-sizes-are-needed-for-the-m207)
- [I have concerns about fusarium, botryis on plants. Can you analyze this?](https://knowledge.emsl.com/en/emsl/knowlegebase/i-have-concerns-about-fusarium-botryis-on-plants.-can-you-analyze-this)
- [What do people test for when worried about microbes water in home or facilities?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-do-people-test-for-when-worried-about-microbes-water-in-home-or-facilities)

See less ▼

## Radon

- [What is Radon and where does it come from?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-radon-and-where-does-it-come-from)
- [How is Radon measured?](https://knowledge.emsl.com/en/emsl/knowlegebase/how-is-radon-measured)
- [How does Radon enter the home or building?](https://knowledge.emsl.com/en/emsl/knowlegebase/how-does-radon-enter-the-home-or-building)
- [How do you lower the level of Radon in your home?](https://knowledge.emsl.com/en/emsl/knowlegebase/how-do-you-lower-the-level-of-radon-in-your-home)
- [What are the dangers of having Radon in your home?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-are-the-dangers-of-having-radon-in-your-home)
- [What is the difference between Radon testing in homes and schools/larger buildings?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-difference-between-radon-testing-in-homes-and-schools/larger-buildings)
- [Does Radon come from building materials?](https://knowledge.emsl.com/en/emsl/knowlegebase/does-radon-come-from-building-materials)
- [What is the Homeowner Test Kit and what is it included with?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-homeowner-test-kit-and-what-is-it-included-with)
- [What is the Real Estate Transaction Kit and what does it include?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-real-estate-transaction-kit-and-what-does-it-include)

See less ▼

## Food Microbiology

- [How much sample do I need to send?](https://knowledge.emsl.com/en/emsl/knowlegebase/how-much-sample-do-i-need-to-send)
- [Can we run PCR for Salmonella?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-we-run-pcr-for-salmonella)
- [How long does the pathogen test take?](https://knowledge.emsl.com/en/emsl/knowlegebase/how-long-does-the-test-take)
- [How quickly do we need to analyze the swabs once they are sampled?](https://knowledge.emsl.com/en/emsl/knowlegebase/how-quickly-do-we-need-to-analyze-the-swabs-once-they-are-sampled)
- [Do we do confirmation on presumptive positive salmonella result?](https://knowledge.emsl.com/en/emsl/knowlegebase/do-we-do-confirmation-on-presumptive-positive-salmonella-result)
- [Are all Listeria considered a Pathogen?](https://knowledge.emsl.com/en/emsl/knowlegebase/are-all-listeria-considered-a-pathogen)
- [Can you test for Salmonella and Listeria off the same swab?](https://knowledge.emsl.com/en/emsl/knowlegebase/can-you-test-for-salmonella-and-listeria-off-the-same-swab)
- [What is the difference between E.Coli O157 and Generic E.coli?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-difference-between-e.coli-o157-and-generic-e.coli)
- [What is the acceptable allowable limit for Salmonella?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-the-acceptable-allowable-limit-for-salmonella)
- [What method do we use for Salmonella?](https://knowledge.emsl.com/en/emsl/knowlegebase/what-method-do-we-use-for-salmonella)

See less ▼

- [FAQs](https://knowledge.emsl.com/en/emsl/knowlegebase/faqs#main-content)

    - [Lead & Metals/Chemistry/Industrial Hygiene](https://knowledge.emsl.com/en/emsl/knowlegebase/faqs#lead-metals-chemistry-industrial-hygiene)
    - [Microbiology](https://knowledge.emsl.com/en/emsl/knowlegebase/faqs#microbiology)
    - [Radon](https://knowledge.emsl.com/en/emsl/knowlegebase/faqs#radon)
    - [Food Microbiology](https://knowledge.emsl.com/en/emsl/knowlegebase/faqs#food-microbiology)
- [Asbestos](https://knowledge.emsl.com/en/emsl/knowlegebase/asbestos)

[![HubSpotFooterKnowledgeBAse](https://knowledge.emsl.com/hs-fs/hubfs/HubSpotFooterKnowledgeBAse.jpg?width=1200&height=300&name=HubSpotFooterKnowledgeBAse.jpg "HubSpotFooterKnowledgeBAse")](http://www.emsl.com)

 Copyright © 2026, EMSL Analytical, Inc.