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Protein Analysis with Purpose
In the pursuit of nutritional quality, agricultural sustainability, and scientific precision, protein analysis stands as a foundational tool. Whether you’re conducting crude protein analysis in animal feed, performing food protein analysis to verify label claims in dairy products, or running feed protein analysis to assess nitrogen levels in soil and fertilizer, the ability to measure protein content accurately is essential—not just for compliance, but for confidence in every decision that follows.
For decades, the Kjeldahl method has served as the benchmark for nitrogen determination— a key step in analyzing the protein content of a sample. However, as laboratories evolve and work to outperform their competition, certain trade-offs with this method have become less than desirable. Time-intensive workflows, hazardous reagents, and complex calibrations fail to meet the needs of modern day, high-throughput labs. The Dumas combustion method offers a refined alternative that aligns with sought-after values of safety, efficiency, and clarity. It’s a shift not just in technique, but in mindset: from reactive testing to proactive insight.
LECO’s FP828 and FP928 protein analyzers are designed to support that shift. Built on the principles of speed and simplicity, these advanced analyzers deliver results in as little as 2.8 minutes per sample with sample masses as large as 2 grams. Their “one method, one calibration” approach eliminates the need for constant adjustments, allowing analysts to focus on interpretation rather than instrumentation. These protein analyzers are not just tools—they are trusted companions in the lab, guiding users toward more informed insights.
Comprehensive Sample Analysis Beyond Protein
But protein analysis is only part of the picture. Moisture and ash content can also play a critical role in understanding sample composition and ensuring accurate crude protein analysis calculations. LECO’s TGA801 and TGM800 thermogravimetric analyzers complement our protein analyzer series by providing precise moisture and ash determination. Together, they offer a holistic view of sample integrity—whether you’re conducting food protein analysis on powdered dairy, feed protein analysis on plant-based alternatives, or agricultural input evaluation.
This integrated approach reflects a deeper philosophy—meaningful analysis begins with meaningful tools. LECO’s protein analyzers are engineered not just for performance, but for purpose. They support workflows that are streamlined, reagent-free furnace, and globally aligned with accepted standards for nitrogen determination using the Dumas combustion method. They empower laboratories to move beyond the traditional Kjeldahl method and toward a future defined by clarity, consistency, and reliability.
As you prepare to revisit your protein analysis strategy, consider what it means to do it right. Explore our application notes, review our webinars comparing Dumas nitrogen determination vs. Kjeldahl methods, and discover how LECO’s protein analyzers can elevate your lab’s food and feed protein analysis capabilities. When the goal is insight (not just output), LECO provides the tools and expertise to guide the way.
Protein Webinar Series
Unlock Precision in Protein Analysis
Join LECO’s expert-led webinar series and explore the latest advancements in protein testing for food, feed, and agricultural applications. Learn how to improve nitrogen determination, streamline workflows, and replace outdated Kjeldahl methods with fast, accurate Dumas combustion techniques. Whether you’re analyzing dairy, meat, plant-based proteins, or soil and fertilizer, these sessions will help you optimize lab performance, reduce cost-per-analysis, and ensure regulatory compliance.
RECORDED WEBINAR
Protein Determination in Food with Focus on Dairy Samples with LECO
Additional Languages Available
Recorded Webinar
Optimization of Combustion Methods for the Determination of Low-Level Nitrogen-Protein in Food
Recorded Webinar
Kjeldahl vs. Dumas – How do you determine protein?
Recorded Webinar
Moisture Determination in Dairy and Liquid Dairy Products
Protein Determination using FP828
Browse the app notes below to discover how our protein analyzers perform when put to the test with your industry’s applications.
Kjeldahl vs. Dumas
Nitrogen and Protein in Cheese
Nitrogen and Protein in Milk and Milk Products
Soybean Meal Protein
Protein in Flour
Protein Determination in Plant-Based Meat Alternatives
The LECO Difference
Trusted expertise, groundbreaking technology, and a commitment to your success.
Low cost of ownership and higher ROI
LECO is one of the lowest cost-per-analysis providers, ensuring greater return on your investment
Perform more samples in less time
2.8 min analysis time drives the high throughput on the FP828
Easy-to-Use Instruments
One Method and Calibration covers most samples matrices
Unmatched Service and Support
With extensive global support teams, LECO provides the highest level of service and support
Featured Instruments
FP828
Carbon, Hydrogen, Nitrogen and Protein Determinator
FP928
Carbon/Nitrogen/Sulfur and Nitrogen/Protein Analysis by Combustion
TGA801
Moisture, Ash, Volatile Content, and Loss-on-Ignition
TGM 800
High precision Thermogravimetric Moisture Determinator
Testimonials
Express Micro Science (Scotland)
“Throughput skyrocketed when we switched to the FP828. We process over 100 samples a day with zero unplanned downtime. It’s reliable, fast, and easy to use across fish, dairy, and produce.”
Michelle Milne | Chemistry Director
ALS Global (Australia)
“We analyze high volumes of food and feed samples quickly and safely. The FP928 eliminated toxic acids and long digestion steps. It’s simpler, faster, and far more sustainable for our lab operations.”
G. Buddhi Dias | Chemistry Technical Manager
State Feed Lab (USA)
“Automating moisture and ash with the TGA801 was transformative. We run 19 feed samples at once now, saving hours every week. It’s a game-changer for routine feed testing.”
Lab Director | (anonymous)
Agricultural Research Center (Asia-Pacific)
“We handle everything from liquid milk to soil in one FP928 with a single calibration. Even low nitrogen levels in soil are captured accurately in one go. It’s incredibly versatile.”
Lead Agronomist
Dairy QA Lab (Europe)
“The TGM800 gave us the same results as our oven method for total solids in milk, but in half the time and with no manual weighing. It’s a huge win for efficiency.”
Quality Manager