Protein haze
Zyme-O-Stab · Dose 350–500 mL/1000 gal
An acid protease that breaks down unstable proteins in white and rosé wines and cuts the bentonite you need. For the bentonite itself, Polargel T settles about 10% faster at a lower addition rate.
The science behind the craft of winemaking
Enology products, cellar supplies and technical reps for wineries and juice processors, since 1991.
- Querca tan rougeGives a soft oak bouquet and helps protect color.
- Zyme-O-Thermo LExtracts color and structure in thermovinified and flash détente reds.
- Coldstab MPAdds softness and fullness to light-bodied wines.
- Zyme-O-StabBreaks down haze-forming proteins, so you need less bentonite.
Your technical rep and nearest warehouse
One rep and one quote for your whole harvest list
Send your ATPGroup rep one list for the season: yeast and nutrients, malolactic bacteria, enzymes, tannins, fining agents, stabilizers, oak alternatives, filtration aids and media, cellar chemicals, and cleaning and sanitation. Our industry veterans and technical specialists support you at every step, with technical data sheets, recommended dosages and winemaking protocols for the problems harvest brings. Warehouses across North America serve wineries throughout the U.S., Canada and Mexico.
Terry Dewane
Sales Manager
Enology sales team
Rachel Gondouin
Sales Representative
Sonoma, Mendocino, Upper Midwest States
Brendan Loftus
Sales Representative
Napa, Lake County, Southwest States
John “JP” Peter
Sales Representative
CA North Coast
Georgetta Dane
Sales Representative
CA Central Coast, Texas, Southeast States
Chris Riordan
Sales Representative
CA Central Coast, Southwest and Southeast
Patrick Gallardo
Sales Representative
CA Central Valley, Northeast States
Brian Campbell
Sales Representative
Northwest States, Midwest States
John Plato
Category Manager
Cleaning and sanitation
Andrew Palamides
Sales Specialist
Cleaning and sanitation
Call your nearest office
Northern California
1230 Shiloh Road
707-836-6840
Windsor, CA 95492Central California
1625 Commerce Way
805-237-1223
Paso Robles, CA 93446Northwest
601 S. Elm Street, Suite B
509-203-2100
Grandview, WA 98930Corporate office
2 Madison Avenue, Suite 210
914-834-1881
Larchmont, NY 10538
Stuck or slow MLF
Malo NutriBact
Yeast-derived nutrients that protect malolactic bacteria and help them multiply for a fast, complete MLF. Pair them with Malo Detox and a culture such as Malo-Plus, selected for low temperatures, sulfur dioxide and alcohol over 15%.
Lower SO2
Vin-Chito
A high molecular weight chitosan that controls Brettanomyces, lactic acid bacteria and acetic acid bacteria at a low dose, from a growing range for winemakers who want to use less sulfur dioxide.
Enology products, cellar supplies and filtration
Wine & Juice
Find the product for the problem in your cellar
ATPGroup offers more than 100 enology specialty products from around the world. Our own selections cover enzymes, tannins, fining agents, stabilizers, antioxidants, malolactic bacteria and filtration aids, and we are the exclusive U.S. distributor for Fermentis yeasts, yeast derivatives and yeast nutrients. Our Product Specs library holds the technical data sheets, and our winemaking protocols cover situations from smoke taint to hard-to-ferment wine.
Tartrate stability
Coldstab Cel · Dose 4–8 lb/1000 gal
A ready-to-use CMC solution that prevents tartrate precipitation in white and rosé wines without chilling them. Coldstab Color, a granulated acacia gum, also guards against color instability.
Smoke taint
Smoke Taint Protocol
Our mitigation and remediation guidelines run from harvesting cold and separating press fractions to fining trials with deodorizing carbon or Phenol-Fine Plus NF, and a yeast that keeps phenols low.
Fermentation
Fermentis SafŒno and Red Star
ATPGroup is the exclusive U.S. distributor for Fermentis yeasts and nutrients, and carries Red Star. Premier Cuvée, with 16.5% alcohol tolerance, is a fast, neutral fermenter that can restart stuck or sluggish ferments.
Tartaric acid for your acid adds, from the world’s largest distributor of tartaric acid
See cellar supplies
Stölzle, Tossware, Coravin and Bar Maid
Glassware
Glassware for your tasting room, printed with your logo
ATPGroup is the master distributor of Stölzle Lausitz and Tossware drinkware, with back-of-house supplies for tasting rooms, caterers and party rental companies. Our in-stock glassware programs deliver orders within days, and our in-house screen-print facility in Paso Robles, California, decorates ATPGroup drinkware or glassware you supply with your logo. Minimums apply for screen printing.
Supplies for brewers, food makers, pharmaceutical and industrial producers
Brewing
Brewery supplies, ingredients, processing aids and more.
See brewing
Food & Beverage
Additives and ingredients for food and beverage production.
See food & beverage
Pharmaceutical
Raw materials with regulation and compliance oversight.
See pharmaceutical
Industrial
Commodity chemicals for a range of industrial uses.
See industrial
Quote your whole harvest list on one form
The 2026 Harvest Quote Form
Harvest is our busiest season, and sending your anticipated needs early helps us reserve inventory and prepare your personalized quote. Current customers can ask their rep to build it from last year’s orders instead.
- 01
Download the form
It lists yeast, nutrients, malolactic bacteria, tannins, enzymes, fining agents, stabilizers, oak alternatives, filtration, cellar chemicals and cleaning, with space for anything else you need.
- 02
Enter quantities only
Fill in your estimated quantities for each product and pack size, and ATPGroup completes the pricing on your quote.
- 03
Send it to your rep
Return it to your ATPGroup representative or to CaSalesOrders@atpgroup.com, and call Customer Service at (707) 836-6840 with urgent requests or questions.