gl-tec.com
Link authority for gl-tec.com (registrable domain: gl-tec.com) from the Common Crawl web graph: PageRank and harmonic centrality history since 2017, current scores, and the site's top backlink sources.
Web-graph authority (0-100)
Domain scores measure gl-tec.com as a whole: every subdomain's links rolled up into one node of Common Crawl's domain-level web graph. Host scores measure the exact hostname gl-tec.com. WWW scores cover the www variant of that hostname, which the graph tracks as its own entry since January 2026 (before that, www and bare host were merged). A big gap between domain and host usually means the domain's authority lives on other subdomains. PageRank is link-endorsement authority: how much weight the sites linking here carry themselves. Harmonic centrality measures reach: how close this site sits to the rest of the web when following links, which favors broadly connected sites over ones boosted by a few heavy linkers. All are normalized 0 to 100 within each crawl snapshot; a dash means that series does not exist for this site.
Homepage
What gl-tec.com presents on its own homepage: the page title, description, and the social share markup it publishes. Pulled from https://gl-tec.com.
| Title | Pharma | BioPharma | Medical Device Equipment Calibration - GL Tec |
|---|---|
| Description | HPLC calibration and IQ OQ PQ implementation services for biopharma organizations. Implementing CMMS and equipment calibration and certification for pharmaceutical manufacturing. |
| OG Title | Pharma | BioPharma | Medical Device Equipment Calibration - GL Tec |
| OG Description | HPLC calibration and IQ OQ PQ implementation services for biopharma organizations. Implementing CMMS and equipment calibration and certification for pharmaceutical manufacturing. |
| Twitter Title | Pharma | BioPharma | Medical Device Equipment Calibration - GL Tec |
Social accounts and contact points
Where this site maintains a presence and every reachable route its homepage exposes: social accounts, contact pages, addresses, and content feeds.
| Contact pages | https://gl-tec.com/contact-us.html |
|---|---|
| Phones | +18582021408 |
Structured data (JSON-LD)
The schema.org markup this homepage publishes: the machine-readable identity search engines and AI systems read. Types found: Organization, FAQPage.
JSON-LD block (835 bytes)
{"@context":"https://schema.org","@type":"Organization","@id":"https://www.gl-tec.com/#organization","name":"GL Technologies","alternateName":"Pharma | BioPharma | Medical Device Equipment Calibration","description":"HPLC calibration and IQ OQ PQ implementation services for biopharma organizations. Implementing CMMS and equipment calibration and certification for pharmaceutical manufacturing.","email":"contactus@gl-tec.com","url":"https://www.gl-tec.com","telephone":"+1-858-202-1408","logo":"https://www.gl-tec.com/images/logo.png","address":{"@type":"PostalAddress","streetAddress":"6361 Nancy Ridge Dr","addressCountry":"US","addressLocality":"San Diego","addressRegion":"CA","postalCode":"92121"},"sameAs":["https://www.linkedin.com/company/gl-technologies-lab-services","https://www.google.com/maps?cid=13982641895744825611"]}JSON-LD block (4,803 bytes)
{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What is commissioning in the pharmaceutical industry?","acceptedAnswer":{"@type":"Answer","text":"Commissioning is the documented process of ensuring that facilities, utilities, systems, and equipment are designed, installed, tested, and capable of operating according to predetermined specifications. In pharma, commissioning verifies that all systems meet GMP (Good Manufacturing Practice) requirements before validation and routine operations."}},{"@type":"Question","name":"How is commissioning different from qualification or validation?","acceptedAnswer":{"@type":"Answer","text":"Commissioning focuses on installation and functional testing to confirm systems meet design and operational requirements. Qualification (IQ\/OQ\/PQ) is a subset of validation that provides documented evidence systems consistently perform as intended. Validation ensures processes produce consistent, compliant results. Commissioning typically precedes and supports qualification\/validation."}},{"@type":"Question","name":"Why is commissioning important for pharmaceutical facilities?","acceptedAnswer":{"@type":"Answer","text":"Because pharmaceutical environments must comply with strict regulatory standards (FDA, EMA, MHRA, etc.), commissioning ensures systems are properly installed, safe, reliable, and ready for validation. It reduces risk of compliance failures, costly rework, and delays in bringing products to market."}},{"@type":"Question","name":"Which systems and equipment require commissioning?","acceptedAnswer":{"@type":"Answer","text":"Commissioning is required for any new or modified system or piece of equipment that must be proven safe, functional, and compliant before entering routine use. This typically includes mechanical systems such as HVAC, boilers, and water treatment units; electrical systems like power distribution and emergency backup generators; control systems such as SCADA, PLCs, or building automation; and process equipment including pumps, compressors, laboratory instruments, and pharmaceutical manufacturing machinery. In regulated industries, commissioning also extends to cleanrooms, sterilizers, and critical utilities such as Water for Injection and compressed air."}},{"@type":"Question","name":"What are the typical stages of the commissioning process?","acceptedAnswer":{"@type":"Answer","text":"The typical stages of the commissioning process begin with planning and design review, followed by pre-commissioning inspections and installation checks. Functional testing is then performed to verify system operation, followed by performance verification under real operating conditions. The process concludes with documentation, operator training, and formal handover into operational use."}},{"@type":"Question","name":"How long does commissioning usually take?","acceptedAnswer":{"@type":"Answer","text":"Commissioning timelines vary depending on system complexity and scope. Simple installations may take a few days, while complex pharmaceutical or industrial systems may take several weeks due to extensive testing, calibration, and regulatory requirements."}},{"@type":"Question","name":"Who performs commissioning in pharma projects?","acceptedAnswer":{"@type":"Answer","text":"Commissioning is typically handled by specialized engineers and technicians experienced in GMP facilities. Independent third-party providers are often engaged to deliver objective testing, documentation, and subject matter expertise."}},{"@type":"Question","name":"What documentation is produced during commissioning?","acceptedAnswer":{"@type":"Answer","text":"Commissioning documentation typically includes plans and protocols, installation and functional test records, calibration certificates, safety and performance test results, punch lists, and final commissioning reports. These documents provide compliance evidence, audit traceability, and support ongoing operations."}},{"@type":"Question","name":"How does commissioning reduce risk in pharmaceutical operations?","acceptedAnswer":{"@type":"Answer","text":"Commissioning reduces risk by ensuring systems and equipment are tested and verified before full-scale production. It identifies design flaws, installation errors, and performance gaps early, minimizing downtime, compliance failures, and product quality risks while protecting patient safety."}},{"@type":"Question","name":"What regulations or guidelines govern commissioning in pharma?","acceptedAnswer":{"@type":"Answer","text":"Commissioning is governed by ISPE Baseline Guides, Good Engineering Practice (GEP), FDA cGMP regulations, EU GMP guidelines, and ICH Q8\u2013Q10. These frameworks support a lifecycle approach to quality, compliance, and patient safety."}}]}Authority over time
Every Common Crawl web-graph release since 2017, roughly quarterly. The domain series goes back to 2017; Common Crawl only began publishing the host-level graph in 2020, so host lines start there. Click a legend entry to show or hide that line. Flat lines are normal for established sites; watch for sustained rises or drops, which track real gains or losses in who links here.
A note on www: through the end of 2025 the source web graph merged www and non-www hostnames into the bare name, so one host line covers both. Starting in January 2026 the graph splits them into separate entries, which is why www can carry its own scores going forward.
Backlink counts
Unique linking domains seen in Common Crawl's link graphs. This is a different dataset than the 0-100 authority scores above: these are raw counts, host-level for gl-tec.com and domain-level for gl-tec.com with all its subdomains combined. Common Crawl covers a large sample of the web, not all of it, so treat counts as comparable between sites rather than absolute totals.
Top backlinks in the domain graph
Common Crawl publishes two link graphs. The DOMAIN graph connects whole domains: every link from any page of one domain to any page of another. This table shows the highest-authority domains linking to gl-tec.com (including its subdomains), ranked by the linker's PageRank. The table shows the top 3; the download carries the full stored list (up to 10,000 linkers) as JSON. Click a linker for its own site profile.
| Linking Site | Linker PageRank | Linker Harmonic Centrality |
|---|---|---|
| biopharmguy.com | 37 | 23 |
| benchchem.com | 29 | 23 |
| afiparts.com | 23 | 19 |