Good Sampling Techniques

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Sampling Practices & Techniques

Our analysis is based on the sample submitted, which must be representative of larger batches or lots. We homogenize multiphase samples prior to analysis unless otherwise instructed.  Solid samples are ground prior to analysis for heterogeneous purposes, unless otherwise instructed. We also consider the sample container and holding time.


Strict confidentiality on all client work is inherent with our service as an independent laboratory. Confidentiality Agreements, which are part of standard business practice for many clients, will be signed upon request. Reports or copies of any laboratory document will only be sent to you, unless written authorization is provided.

Quantity of Sample


Detection limit is based on sample size used. Please submit the appropriate sample size for best results and contact us for appropriate sample sizes.

Three to ten grams of sample is normally required for the determination of each element present in amounts greater than two percent. For trace analyses (ppm), several grams are needed for each determination. If your sample is limited in quantity, please contact us in advance for more exact requirements based on your required detection limits. (Please note that most test methods used by our laboratory are destructive in nature.)

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Sample Containers


Select an appropriate container when sending in your sample for testing. Some samples will require air-tight containers for testing moisture. Please ensure that your sample is secure and does not leak. By law, leaking samples cannot be tested and damaged samples may become contaminated.

Sample Delivery

CAL accepts samples by mail or courier to:
1060 Tapscot Road, Toronto, Ontario, M1X 1E7
Phone: (416) 286-3332
Fax: (416) 286-3885
Toll Free: (877) 246-9107

Sample deliveries are accepted Monday through Friday (except holidays), from 9:00 am to 5:00 pm.

Samples received after 3:00 PM are processed the following business day.

When requesting "RUSH" services, please use CAL "RUSH" labels on the outside of the shipping containers. Containers labeled "RUSH" are opened and processed before Regular Service packages.

Samples requiring special handling, treatment, or preparation may be subject to additional charges.

Client Data Delivery


Our computer tracking system allows us to find your sample in the analytical process immediately. Our turn-around times are some of the quickest in the industry:

From 5-7 Days from the Date of Receipt!

Your analytical reports are scrutinized at three levels to assure accuracy:

  • First, by document reviewer
  • Second by our Laboratory Manager
  • Finally by our Director of Quality Assurance

For Quality Control purposes your reports can be sent by fax transmission or email to specific manufacturing or warehousing operations.

RUSH: 48 hours Add 50%