Hops Analyses- Hops analysis services are offered August 1- October 31
Fresh hops – Pre Harvest
Alpha and Beta Acids, Dry matter - $30
- Alpha and beta acids are indicative of harvest maturity and characteristic of hop cultivar.
- Hop moisture (commonly reported as percent dry matter) is an important value for harvest determination.
- Includes: 10% moisture adjusted alpha acid (%), beta acid (%) and dry matter (%).
Moisture - $15
- Harvesting when hops are at their ideal harvest moisture content (~ 80%) maximizes hop quality.
Note: At this time, total oils will not be available for fresh samples; samples that are dried/ pelleted can be analyzed for total oils.
Sampling instructions for fresh hops:
- Minimum 1 ounce (~ 30 grams)
- Representative sample (not the “best” or “worst” looking)
- Sealed bag (zip top closure)
- Next day deliver before 1 pm
- Cold packed
Dried hops – Brewing Quality
Alpha and Beta Acids, Hops Storage Index, Moisture - $30
- Alpha and beta acids contribute bitterness to beer.
- The hops storage index (HSI) is used to estimate alpha and beta acid loss due to storage and handling.
- Includes: 10% moisture adjusted alpha acid (%), beta acid (%), hops storage index (HSI), and moisture (%).
Moisture - $15
- Hops should be kiln dried <10 % moisture for optimum quality upon storage and processing.
Total Oils - $30
- Hop oils contribute aroma to beer, and oil content can be a quality indicator of hops samples.
- Includes: 10% moisture adjusted total oil content (mL/100 g hops) and moisture (%)
Essential Oil Composition- $70
- Compositional analysis of 7 aroma compounds in hops including beta-pinene, myrcene, linalool, caryophyllene, farnesene, humulene, and geraniol.
Sampling instructions for dried hops:
- Minimum 2 ounces (~ 60 grams)
- Representative sample (in “to be sold” condition)
- Sealed bag (zip top closure or vacuum sealed foil barrier package)