Please allow 3–5 weeks for normal sample processing. Shipping time for incoming samples and outgoing results is additional.
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Expedited service
When a shorter processing time is required for an inspection or audit, use a tracked shipping service and notify the laboratory before sending the samples by emailing lab@NationalLeakTest.com.
Turnaround shorter than one week may be subject to a $5 per-kit expediting fee. You may also request emailed results when submitting samples.
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Complete and legible paperwork
National Leak Test Center is not responsible for inaccuracies or delays caused by incomplete, illegible, or missing paperwork. Follow the instructions enclosed with each kit.
Mark all correspondence and samples with your customer number. Providing an email address helps us resolve questions efficiently.
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Package labeling
Special labeling is not required by the carrier. Do not mark the package “radioactive.” The submitted sample is not considered radioactive material for shipping purposes, even if contamination is detected.
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Multiple kits
Place multiple kits in one shipping package whenever possible so they remain together during transit.
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Use the exact delivery address
NLTC Industries, Inc.
141 Goundry St., Box 1480
North Tonawanda, NY 14120 -
Incorrectly addressed packages
Packages sent to any other address may be returned as undeliverable. Redirect charges are the sender’s responsibility, and National Leak Test Center cannot control losses caused by improper addressing.
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Use only supplied kit material
Use only the material supplied in the test kit unless prior authorization is received. Do not substitute tissues, cloth, or other materials for the provided filter paper.
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Prepare samples as instructed
Samples that are not prepared according to the supplied instructions may incur additional charges because they can create processing hazards. Folding the filter paper, for example, can cause a serious contamination problem during analysis.