Weight Calibration Services
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Types of Weights We Calibrate
We handle a full spectrum of mass standards and test weights, including:
- Class E1 and E2: Highest precision for reference standards and balances.
- Class F1 and F2: For high-accuracy lab and quality control use.
- Class M1 and M2: General-purpose field and industrial weights.
- Cast iron, stainless steel, and brass weights in various shapes (cylindrical, slotted, sheet).
- Custom or specialty masses for unique applications.
Each calibration verifies mass values against NIST-traceable references, reporting deviations, uncertainties, and adjustments as needed. For related precision tools, check our laboratory scales.
(559)446-1022
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(855) 440-1022
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Importance of Regular Weight Calibration
Mass standards can drift from nominal values due to wear, environmental exposure, magnetic effects, or handling. Uncalibrated weights lead to inaccurate scale verifications, out-of-tolerance measurements, and potential compliance failures.
Key reasons to calibrate include:
- Meeting ISO 17025, ASTM E617, OIML R111, and other standards for traceability.
- Supporting audits in regulated environments (pharma, food, manufacturing).
- Reducing measurement uncertainty in critical processes.
- Preventing product quality issues or legal liabilities.
West Coast operations in manufacturing and labs benefit from our quick response times. See why calibration is essential in our blog post.
Fully-Insured & Certified Expertise
Comprehensive Weighing Solutions
Strategic Location Advantage
Cost-Effective & Eco-Friendly
24/7 365 Days a Year
Fastest Response Time
All Work Fully Guaranteed
Over 50 years of reliability
Calibration Levels and Options
We provide tiered services tailored to your needs:
| Level | Description | Typical Use | Documentation |
|---|---|---|---|
| Verification | Basic check against tolerances without adjustment | Routine field checks | Pass/fail report |
| ISO/IEC 17025 Accredited | Full uncertainty budget, as-found/as-left data | Regulated industries, reference standards | Detailed certificate with traceability |
| Adjust & Calibrate | Material removal or addition to meet nominal | When weights are out of tolerance | Comprehensive report + adjustments noted |
Choose lab drop-off or on-site for minimal disruption. Compare this to our pressure or temperature services.
Trust Our Tried and Tested Process
Contact Us 24/7, 365
Available Every Day, All Day, to assist with weighing solutions and provide prompt, lasting results.
Fast Response
In the event of a weighing emergency, our team is ready to respond promptly and initiate immediate solutions.
Fully Equipped
We utilise the latest tools and equipment to deliver professional weighing solutions to all clients.
Thoroughly Trained
Our team is made up of highly skilled and experienced experts, all of whom provide excellent service.
Our Weight Calibration Expertise
With over 50 years in weighing solutions, we use state-of-the-art mass comparators and environmental controls for the highest accuracy. Technicians are trained in metrology best practices, and all work is NIST traceable under ISO 17025 accreditation.
Benefits include:
- Same-day dispatch for urgent needs (orders before 3 PM PST).
- Cost-effective pricing through lean operations.
- Flexible on-site or lab services across the U.S., with strong West Coast coverage from Fresno, CA and Wittmann, AZ.
- Full traceability documentation for audits.
Our locations ensure prompt support—view details on the locations page. Meet the team on our staff page.
Industries Relying on Our Services
We serve sectors where precise mass is non-negotiable:
Batch accuracy and GMP compliance.
Scale verification and process control.
Portion control and ISO 22000 standards.
Tight tolerance verification.
Our regional focus supports California’s manufacturing and Arizona’s industrial base. For local options, see California or Arizona services.
Available 24/7, 365 Days a Year
Our work is guaranteed
Contact our fast response team
Absolutely no hidden fees
Your Expertise Matters: Read Reviews & Share Your Insights
Always On Time, Always On Budget
Transparent & Fair Pricing
We’ll break down the cost of our services and ensure that you get the best price for your situation.
Punctual, Professional, Proactive
Our team can be with you in no time to deliver expert Weighing Solutions with speed and efficiency.
Cost-Effective & Eco-Friendly
We take an environmentally conscious approach while still delivering affordable solutions to clients.
Highly Rated
Past clients have been left wholly satisfied by our efforts and have left stellar reviews of our services.
Get in Touch
Reach out to our experts today and take advantage of our reliable Weighing services. Call now at (559)446-1022 or fill out the contact form below.
What our clients say
“I’ve relied on LSI Scales for years. Their quick repairs and accurate calibration are why our measurements are always on point. They’re essential to our precision scales!”
John S. - Manufacturing Manager
“LSI Scales excels in precision for our mining site. Their heavy-capacity scales and expert calibration guarantee pinpoint accuracy. They’ve been key to our operation’s success for years.”
David H. - Mining Operations Director
“LSI Scales is our go-to for peak season rentals. Their vast inventory and quick delivery have saved us countless times. We rely on LSI Scales, and they always deliver!”
Sarah M. - Logistics Coordinator
LSI Scales has been a game changer for our livestock operations in Fresno. Their quick calibration services ensure our scales are always accurate, which is crucial for our business. Highly recommend their expertise!
John D. - Fresno, CA
As a logistics coordinator in Phoenix, I rely on LSI Scales for peak season rentals. Their vast inventory and prompt delivery saved us during a critical time. They truly understand the needs of their clients!
Sarah M. - Phoenix, AZ
For our mining operations in Las Vegas, LSI Scales has provided exceptional service. Their heavy-capacity scales guarantee pinpoint accuracy. Their expert technicians are always ready to assist!
David H. - Las Vegas, NV
LSI Scales has been our trusted partner for industrial scales in Portland. Their scale installation and maintenance services are top-notch, ensuring our operations run smoothly. A reliable choice for any business!
Emily R. - Portland, OR
In Seattle, LSI Scales stands out for their commitment to precision. Their quick repair services have kept our operations efficient, and their knowledgeable staff is always a pleasure to work with!
