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Visitor Rules
Before sign-in, the visitor shall read and agree to the following rules:
- Each visitor or group of visitors shall have a PTL staff member escort.
- Visitors shall follow the common laboratory safety rules as well as the specific requirements given by the PTL escort.
- No cameras are permitted inside the PTL facility without the approval of the PTL escort.
- The documentations, samples, and equipment in PTL may contain proprietary information and therefore shall not be divulged without PTL's permission.
Contact Details
Hours: Monday-Friday: 8am-6pm
Phone: +1(480) 966-1700
General Email: info@solarptl.com
Resolution Email: resolutions@retc-ca.com
Request Quote
Need pricing for our testing or certification services? Submit a quote request and our team will review your project details and provide the information you need to get started with your project.
Request QuoteComplaints/Appeals
If you have concerns about our services or need to file an appeal regarding a certification decision, please submit the form below. Our team reviews each submission promptly and follows up as needed.
Submit Complaints/AppealsReport Unlawful Use of an SPTL Certification Mark
Help us protect the integrity of SPTL certification marks. If you encounter a product that you believe is using our certification mark unlawfully, please report it using the form below.
Reports can be submitted anonymously - providing your personal information is completely voluntary.
Customer Survey Form
We value your feedback. Please take a moment to complete our customer survey so we can continue improving our services.
Open Customer Survey