FAQs

How do I submit samples?

The first step is to speak with a member of our team to set up testing if you are new to us or if you are exploring new testing options. Then you will be provided with a Sample Submittal Form. This form and the instructions can also be downloaded off of our site from the “Resources” section. Once you have this form, you simply need to fill it out according to the instructions, email us a copy, and include a printed copy in your shipment.

How much sample do you need?

For solid and liquid samples (non environmental), we prefer 10 g (mL). This allows us enough sample to perform all of the necessary quality control. If you have a water sample, we require 250 mL in order comply with DEP requirements. We can work with less volume in some cases, so please contact us if you have special project requirements.

What are your detection levels?

Detection levels vary from element to element and also depend on the sample matrix. Please call us to discuss your detection requirements and sample type.

What is PQL?

PQL stands for “Practical Quantitation Level.” This is the lowest level at which the method can confidently discern between two different values. This is the level at which we feel confident reporting results.

What does RSD mean?

RSD stands for Relative Standard Deviation and is an expression of the ratio of the standard deviation to the mean. This value is used to to express the precision and repeatability of an assay.

What happens if I need to add an analysis to a sample I have already submitted?

If you have not received results yet, please call us and we will do our best to make those changes for you. The addition or change of analyses may affect the original turnaround time. If it is for a sample for which you already have the results, we can check to see if we still have the sample and enough of it to run the new analyses. New paperwork or new sample may be required. All samples are retained for a minimum period of two weeks after testing has been completed. If you require a longer retention time, please contact us.

What are the terms of payment?

Typically, invoices are sent 1-2 weeks after you receive your final analytical report. Terms of payment are net 30 days. We accept payments by check, Visa, Mastercard, Amex and Discover. We also accept payment by Electronic Bank Transfer. New clients may be required to pay prior to analysis of samples.