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CDS Vintec News

NEW PRODUCT RELEASE: Affordable ‘’egg-shaped’’ wine containers

Should budget or winery space be a constraint, the ‘’egg-shaped’’ SPEIDEL Polyethylene tank offers a cost-effective compromise (vs concrete) and allows for many of the benefits of the concrete egg tanks at a fraction of the cost. Many egg-shaped wine tanks have found their way into local wineries. Results have been very good and lead to a raised awareness of the perceived advantages. However, concrete tanks are expensive and difficult to transport or move around. Egg-shaped Polyethylene tanks that allow for controlled micro-oxygenation offer an alternative solution. It might not have the same thermal qualities than concrete, but are easy to move, smooth inside surfaces can be sanitized easily and they are available at a fraction of the cost of concrete tanks. Other general advantages include the lack of evaporation, no off flavour compounds and no interference with the acidity or pH of the wine. The oxygen permeable egg-shaped tank manufactured by SPEIDEL ( (the FERMENTEGG - available in 250l & 600l), was the 1st in the market and have gone through extensive R & D (including practical feedback from winemakers). SPEIDEL is a trusted name, having manufactured value adding wine containers for more than 100 years (using German precision engineering and process control). The design clearly differentiates it from other options and offer further unique benefits;


  • Tanks are made to proven ratios for optimum oxygen permeability and other functional aspects
  • Other options have relatively ’flat’’ bases and it interferes with vortex formation (keeping lees in suspension with associated benefits) during fermentation
  • Tanks ‘’conserve’’ enough heat needed for fermentation, flavour & colour extraction, but do not ‘’over-heat’’ the wine. Cooling options can be integrated to manage fermentation curves better.
  • Tanks are supplied with concave support bases, allowing for easy access to the valves and look aesthetically good enough to be used as a marketing tool (unlike most others).
  • There are 2 valve openings (draining & racking) and a fermentation syphon bung can be fitted.
  • The top lid opening was kept relatively small purposely, allowing for better cap management (a bigger portion of the cap is immersed), but at 22 cm is still big enough to allow for easy cleaning  
  • Made from food grade polyethylene, BPA free & meet FDA (US) & EU Food Safety Regulations
  • Oxygen permeable at a rate more or less comparable with 2nd fill barrels  
  • Smooth internal surfaces can be cleaned easily, allowing for interchangeable use (red and white)
  • Sealing is good enough (and micro-oxygenation controlled enough) to use as a storage tank for wines that will benefit from additional micro- oxygenation (after fermentation) 

Contact Nina van Niekerk or Jean du Toit for more detail.


CDSVINTEC extends its range of “value add” vessels used for wine fermentation and more

CDSVINTEC have gained an enviable reputation representing the cooperages of D & J and Vallaurine (oak barrels), as well as Nomblot’s concrete wine tanks. While the fermentation & ageing fine wines in oak barrels will always be a focus of many (implying our continued focus on the supply of oak barrels), there is also a growing interest in the use of vessels that allow for micro oxygenation and/or batonage without necessarily having an oak profile as stylistic target – as proven by the popularity of the concrete tanks we supply. Trialed and tested innovations in the use of oxygen permeable polyethylene material have led us to include it in our product portfolio of specialized wine vessels and we have therefore agreed with our supplier OVinti to represent them locally. Their products are configured for convenient use and designed to assist oxygen management in wine production. Depending upon the market, products are sold under the “OVinti” or “Flextank” label and include both heavyweight and lightweight wine maturation vessels, which simulate the micro oxygenation process within both neutral and two year old oak barrels. OVinti vessels have been sold in the USA since 2006 and are currently leading the market.


How does oxygen permeate the vessel and get into the wine?

Polyethylene is oxygen permeable and oxygen is driven across the tank wall by the partial pressure differential between the wine and the atmosphere.


Can all polyethylene vessels be used for winemaking?

Obtaining the required permeability for winemaking is what makes OVinti vessels unique.


There are many vessels on the market made of polyethylene but not all are created equal in the world of winemaking. OVinti vessels have been carefully engineered with special attention given to the selection and blend of the resin that is used, the surface area to volume ratio, wall thickness and configuration of each vessel. It is these details that make OVinti vessels ideal for use in winemaking.


How does the oxygen permeability of OVinti vessels compare to that of traditional oak barrels?


OVinti's maturation weight vessels are designed to have a similar oxygen permeation rate to that of a typical second year wine barrel, when used at a nominal cellar temperature of approximately 13 degrees Celsius .OVinti 'heavyweight' vessels are designed to act like neutral wine barrels. Oxygen permeation rates are about half that of the maturation vessels and are comparable to "neutral" barrels.


Will OVinti vessels taint my wine?


Modern catalyst technology has produced food grade polyolefins that are extremely stable polymers. Polyethylenes from this group are widely used in the food and beverage industry in manufacturing processes, transport and storage. OVinti products are made from carefully selected quality materials and there have been no reports of taint following their use in thousands of wineries.


Can I use OVinti vessels for making white wine?


Originally designed for red wine maturation, OVinti vessels are increasingly used in the production of white wine. Winemakers have used both the regular maturation weight vessels and "heavyweight" for vessels in white wine production. Certain shapes assist with “automatic” batonage, allowing for all the benefits associated with prolonged fine lees contact.


Can oak flavours be “added” to OVinti vessels?


OVinti vessels are an excellent platform for the subtle addition of oak flavours under full winemaker control using quality oak adjunct products.


Are OVinti vessels environmentally friendly?


OVinti aims to keep its environmental impact as minimal as possible. In line with that aim, all polyethylene vessels are fully recyclable. OVinti vessels also clean very easily and require much less water than most other alternatives.


Please contact Brenton Maarman or Peter Peck for more information.

NEW PRODUCT RELEASE (For Automated Mechanical Grape Sorting)

Since 2009 CDSVINTEC have managed to establish an undisputed reputation as the “go-to” specialist of equipment required for automated mechanical grape sorting (de-stemming & MOG removal). To further strengthen this position, in 2015 we moved to SOCMA as our supplier of choice for small to medium size wineries (flows of up to 10 t/hour). SOCMA’s CUBE offers the best available system on the market for almost perfectly separating intact whole clean berries from everything else. It is a combination of a vertical berries separator, a vibrating cleaning surface and a smart stem removal system. The advantages include:


  • Very competitive pricing
  • Ease of dismantling, reassembling & cleaning
  • Best MOG removal rates (> 90% of waste material with a loss ratio of < 2%)
  • The design simplicity limits breakdown risk
  • Compact size assists with incorporation into existing infrastructure
  • A capacity of 8-10 t/hr that can handle hand and machine harvested grapes.