White Labs Laboratory Services
All tests conducted at White 
Labs in San Diego, Calif.

Download the WL "Request for Sample Analysis"
Download the WL "Certificate of Quality Assurance"

(Note: This page is not updated. The current catalog can be found here).

Testing Services

LS6610 Sample Analysis for Breweries (Micro)
Includes: WLN, WLD, LCSM, LWYM, HLP, SDA testing. Also includes Gram stain and identification of contaminants present

LS6110 Lab Service: WLN Plates Wallerstein Nutrient plates without cycloheximide
For the cultivation of yeast, molds and bacteria. Containing a pH indicator dye (bromocresol green), WLN plates allow everything to growth, including brewing yeast.  Different yeast strains take up the dye differently, allowing some differentiation between brewing strains.  Recommended use in conjunction with LS6120: WLD plates to detect and identify brewery contaminants.

LS6120 Lab Service: WLD Wallerstein Differential plates with cycloheximide
Wallerstein media with the addition of cycloheximide to suppress the growth of brewers yeast and mold, isolating the bacteria and wild yeast species found in brewing.  In addition, WL media allows for the easy detection of acid-secreting bacteria, such as lactic acid bacteria and acetic acid bacteria, via its bromcresol green pH indicator component. 

LS6200 Lab Service: LWYM Wild Yeast detection
For detection of Saccharomyces-type wild yeast. Formulated with crystal violet to inhibit, or markedly restrict, growth of brewery culture yeast while permitting growth of a variety of wild yeast. 

LS6210 Lab Service: LCSM Wild yeast detection
For detection and quantitative determination of wild yeast populations, or non-Saccharomyces species of wild yeast, in brewing.  Media uses cupric sulfate to inhibit the growth of brewers yeast cultures.  

LS6300 Lab Service: HLP Anaerobic Test
This medium is used to check for the presence of Gram-positive lactic acid bacteria, Lactobacillus and Pediococcus. These bacteria are anaerobic, heat-resistant, and alcohol- and pH-tolerant, making them common beer spoilers.

LS6500 Microscope Analysis  
Includes: analysis of sample viability, dead cell count, detection of abnormal cells, description of cell morphology, condition of cell membrane, detection of amorphous matter and condition of protoplasm.

Testing for Nutrition Analysis

LS6644 Nutritional Beer Analysis: Alcohol by Volume, Density, Extract, % Attenuation, Protein, Carbohydrates, and Calories.

LS6645 Calories per 12 fl. oz.

LS6672 Fat

LS6670 Sugar Profile-Dextrins, Maltriose, Maltose, Glucose, and Glycerol

Tests by Gas Chromatography

LS3000 GC: Acetaldehyde

LS3200 GC: VDK, Total Determination

LS3250 GC: Diacetyl, As-is Determination

LS3300 GC: Dimethylsulfide (DMS)

LS3400 GC: Fusel Alcohols & Esters

LS3050 GC: Complete Analysis Beer
Includes: acetaldehyde, fusel alcohol, and esters  

Tests by Alcolyzer

LS3100 Alcohol (ethanol)
Includes: Alcohol (by volume and/or weight), Extract, Attenuation  

LS6640 Alcolyzer Complete Analysis:
Includes: alcohol, extract, attenuation, density, calories, pH & color.  

LS6645 Calories
Calories per 12fl oz.

LS6646 Alcohol (by volume and/or weight)

Additional Services

LS6642 Chill Haze Testing: Includes current and forced testing

LS6665 Carbon Dioxide: Measures CO2 levels in cans or bottles

LS7000 Respiratory/Petite Mutant Test: Tests for a respiratory defect gene in the yeast sample

LS3500 MiniFerment: fermentation trials. Click here for more information.

LS6671 Yeast Viability/Vitality: Using methylene blue and methylene violet to determine the health of a yeast sample

LS6655 IBU Testing: Bitterness testing using American Society of Brewing Chemists International Method. 

LS6658 Beer Color Test: Reported in °Lovibond.

Testing Packages

LS6640 Beer Twin Test: Comparison for two beers for alcohol, extract, attenuation values, IBU, and VDK.

LS6620 Complete QC Analysis
Includes: Microbiological testings, alcohol, extract, IBU, pH, total VDK

LS6610 Sample Analysis for Breweries (Micro)
Includes: WLN, WLD, LCSM, LWYM, HLP, SDA testing. Also includes Gram stain and identification of contaminants present.

LS6644 Nutritional Beer Analysis: Alcohol by Volume, Density, Extract, % Attenuation, Protein, Carbohydrates, and Calories.

LS8000 Build Your Own QC Program 
Pick 3 of the following: Diacetyl- total and as-is, Color/IBU, Nutrition-Protein and Carbohydrates, Alcohol and extracts, esters and fusels, microbial testing 

LS8010 Brewery QC Program
Diacetyl-Total and As-Is, Color/IBU, Nutrition, Alcohol and Extracts, Esters and Fusels, Microbial Testing

Special Testing Programs

QC Day

Big QC Day, which began in 2007, is the only large-scale, independent testing of craft beer. Brewers learn about their beers and quality control issues at an affordable cost. The tests provide a picture of the status of craft beer in general.  Includes: Wild yeast test, aerobic bacteria test, anaerobic bacteria test, beer color, IBU, density, alcohol by volume, extract, % attenuation, calories, pH, and total VDK (diacetyl). Breweries can compare their tests against the overall results of the test group. The cost includes free shipping for domestic clients. For more information visit the Big QC Day Resource Center.

"Build Your Own" QC Program

White Labs MiniFerment™
Fermentation Trials (LS3500)

Test fermentation speed, flavor profile, new ingredients, and new recipes- easily.  White Labs’ MiniFerment process can utilize as little as 2 liters of wort, and replicate large scale batches.  We can even use your own wort. These tests provide reliable data about your beers, such as optimal aeration levels, fermentation temperatures, pH levels, and pitching rates. It is also an ideal way to test multiple yeast strains on the same wort.  Beer analysis, including gas chromatography, can be added to the analysis.  For more information, contact our sales staff at 1-888-5-YEAST-5 or visit here.

Siebel Institute Testing

The Siebel Institute of Technology has moved its Laboratory Services Division from its North Chicago location to its new home in the facilities of White Labs in San Diego. "Through the combined expertise of Siebel Institute and White Labs, we will continue our over 130 years of providing the full range of analytical services to the international brewing industry," Siebel says. To review the Siebel Laboratory Services catalog, visit here.

White Labs Consulting Services and One-day Seminars (LS2000 & LS2100)

White Labs offers expert, affordable on-site assistance for all of your fermentation needs, including:

• Laboratory Staff Training

• Laboratory Set-Up, including protocol and procedure manuals

• Contamination Risk Assessment/Clean-Up

• New Product and/or Fermentation Method Assistance

• Yeast Handling

• Yeast Propagation

• Cellar Training

For more information or to schedule a consultation, write us or call 1-888-5-YEAST-5.