Stuck or Sluggish Ferments

With vintage drawing to a close, we are receiving many calls for advice on dealing with stuck and sluggish ferments. Our Stuck Ferment Protocol can help. Also consider:

• Analysis of samples to get an accurate concentration of residual sugar and the ratio of remaining glucose to fructose.
• Glucose & Fructose Test Kits that allow the determination of these two sugars separately.

We recommend these great products from Enartis

Nutriferm No Stop

Nutriferm No Stop is an inactivated yeast rich in sterols and long-chain fatty acids.  In case of stuck ferment, its addition can help restart without the need for another yeast inoculation.
Available in 1kg and 10 kg.
More details  |  Request a quote

Nutriferm Advance

Nutriferm Advance is a complex additive made from inactivated yeast, ammonium phosphate and cellulose, it helps yeast with alcohol tolerance and exerts a detoxifying action, thus assuring optimal aroma cleanliness while preventing the formation of hydrogen sulfide. Available in 1kg and 10kg.
More details  |  Request a quote

EZ Ferm 44

EZ Ferm 44 is the recommended yeast for restarting stuck and sluggish fermentations. It combines high alcohol tolerance (17.5%), strong fermentation kinetics and minimal nutritional needs with a strong affinity for fructose metabolism. 500g packs.
More details  |  Request a quote

Ferm WS

Ferm WS is a yeast  well suited for a wide spectrum of red and white varietals and is recommended for fermentation of high °Brix juice and to restart stuck fermentations. 500g packs.
More details  |  Request a quote

Malolactic Bacteria

Using the right strain of Oenococcus oeni offers the last opportuity to improve the balance and structure of your wine. Enartis offers a range of bacteria suitable for ensuring successful fermentation even in the most difficult conditions.

EnartisML MCW

EnartisML MCW is a robust strain that can withstand difficult conditions such as low pH, high temperature and alcohol up to 15.5%. Develops creamy, buttery notes in white wines. 
More details  |  Request a quote

EnartisML Silver

EnartisML Silver ensures the progress of MLF under very difficult conditions, up to a maximum of 17% alcohol to produce increased complexity and fruitiness in red wines.
More details  |  Request a quote

A Substitute for Clinitest

Test for Glucose and Fructose in less than a minute.

• Quickly tests for sugar in wine.
• One of the fastest and simplest residual sugar tests on the market, the AimTab uses the same test procedure as Clinitest.
• Each tablet is individually wrapped to prevent oxidation.

Place your order for these great products now.
AimTab $49+GST

RESIDUAL SUGAR TESTING:
Glucose and Fructose Test Kits.
Made in Australia, the same great price and AVAILABLE NOW!

There are many different types of sugars, but the ones that are of most interest to winemakers are the fermentable ones: glucose and fructose.  The usual ratio of fructose:glucose  in a fermenting must is 1:1, however if a ferment becomes sluggish or stuck, this ratio increases and the ferment can be difficult to restart without the addition of a fructophilic yeast such as EZ Ferm 44.

Our range of Vintessential Glucose & Fructose enzymatic test kits allow quick and accurate determination of these individual sugars separately, or as a total.
Follow these links for kit instructions and to download our calculation spreadsheets.

Our range of G&F kits include:

4A140        30   Test Kit for Spectrophotometers    $107 (+GST)
4A145        100 Test Kit for Spectrophotometers    $289 (+GST)
4B140        500 Test Kit for Discrete Analysers       $118 (+GST)

For those not yet set up for enzymatic analysis in their lab, you can send your samples to your closest Vintessential lab for fast turnaround analysis of Glucose and Fructose. The cost of this analysis is $34 (+GST) and for no extra charge, we can provide, at your request, separate figures for glucose and fructose.

Vintessential Spectrophotometer Starter Packs

As Australia’s leading wine-testing laboratory, we know what makes a good spectrophotometer. So now we have our own V120. It is simple to use, built to last and outstanding value for money. Even more so when you bundle it with our Spectrophotometer Starter Pack, which includes:

• V120 spectrophotometer
• 2 micropipettes
• 2 bags of pipette tips
• 1 box of cuvettes
• 1 x FREE Vintessential Enzymatic 30 Test Kit. (Option of Malic or Glucose & Fructose Kit)

V120 Spectrophotometer Starter Pack.
$2450 + GST includes all this!

Our spectrophotometer is designed to work perfectly with the test kits we make in our own laboratories. With your spectrophotometer, you’ll be ready to use the following Vintessential test kits:

• Acetic Acid
• Ammonia
• Citric Acid
• D-Gluconic Acid
• D-Glucose/D-Fructose
• L-Lactic Acid
• L-Malic Acid
• Primary Amino Acid Nitrogen
• Sucrose
• Sulfur Dioxide Free
• Sulfur Dioxide Total