Submitting Samples to EMA

Turn Around Time: The standard turn around time (TAT) for samples is 7-10 business days, with the exception of fresh products where the standard TAT is 24-48 hours.

Rush Services: EMA also provides RUSH services for our clients. Potential services available are: 6hr (same day TAT), 12hr (early next day service), 24hr (end of next day service), 48hr, 72hr, and 5 Day TAT. All rush requests must be approved by the Lab Director prior to the receipt of samples, and are subject to availability based on the nature of the matrix, the tests requested, and the current backlog of samples in-house.

Pricing: There are many factors that go into our pricing. In order to best meet your specific needs, please contact us for a price quote.

When submitting samples to EMA for pesticide residue analysis, there are two required forms and one optional form that must accompany every sample you send to our lab.

Sample Submission Form: This form is required for every sample you send to us. Please fill this out in its entirety, making sure to leave no blank spaces. This will ensure the appropriate information is placed on the final report, and the report is sent to the appropriate person(s). If you have any questions on how to fill out any portion of this form please contact us.

Border Shipping Form: This form is required. Please have this form in a highly visible area on the outside of all shipping containers. If this form is not placed on the shipping container, your package may not be delivered, or held for inspection, which can delay the arrival of your samples.

Chain of Custody: This form is not required, but can be useful depending on your needs.

Sampling Issues and Submitting Samples for Analysis

Selecting a representative sample and submitting it correctly are critical to obtaining acurate information from the analysis. At EMA, we take great care that our analysis is representative of the whole sample you submit. Deviation from proper protocols in sample collection, container selection, or handling can invalidate an analysis. While it is not possible to completely describe all situations here, general sampling guidelines are discussed below. For a printable version of general sampling guidelines please click here.

Sample Collection

For produce, it is important several portions are collected from different areas of the field, bin, etc, for compositing in the laboratory. These samples must be shipped in glass or plastic bags to prevent contamination during shipping.

A minimum of 200 grams per commodity per sample per test should be submitted. If less than 200 grams of sample is available, please contact us to assess whether we can perform the analysis with a smaller sample size.

For soils and waters, it is important that the samples be collected in clean glass containers or brass sleeves. Generally, 100 grams of soil and 1 liter of water are the minimum amount of sample required for each test requested.

Shipping and Preservation

Samples should be shipped to the following address:

Sample Receiving
Environmental Micro Analysis, Inc.
460 N. East St.
Woodland, CA 95776

If you would like to drop off samples at our facility, please see the map for driving directions. If you plan to drop off samples outside of our normal business hours, please call ahead to make sure we can accommodate your request.

Shipping Instructions:

To ensure that your samples arrive at the laboratory in good condition, please make sure that all meat and dairy products, water, soil, and previously frozen or refrigerated items are sent with either blue ice or wet ice in a cooler. For water, please cool samples to 0-4 degrees Celcius without any chemical preservation methods.

Dried products may be shipped at room temperature and without ice.

All samples should be shipped overnight to the laboratory.

If you have any questions or concerns about shipping, sample receiving, or sample condition, please contact us.