Product

The Vinguard dual release SO2 gas generating sheet represents the latest technology in the field of controlled release. SO2 gas is released through a monolithical release mechanism, similar to release systems used in the pharmaceutical industry, and can be controlled and manipulated to suit any client’s specific requirements.

VinguardTM consists of three layers: a non SO2 gas permeable polymeric carrier material, a polymer matrix with active SO2 release particles dispersed evenly through the matrix and a gas and moisture permeable non-woven.

Release of SO2 gas takes place through a monolithic release mechanism once the sheet comes into contact with the high levels of moisture present inside the grape packaging. Release of SO2 gas is directed in only one direction by the non SO2 gas permeable polymeric carrier material. The fact that SO2 gas is only allowed to move in one direction combined with the unique gas release properties of the polymer matrix allow VinguardTM to use lower dosages of SO2 to obtain effective Botrytis cinerea control.

The unique construction of the polymer matrix enable the VinguardTM dual release SO2 gas generating sheet to release SO2 gas in a controlled manner in two distinctive phases over an extended period of time. Manipulation of the release rate can be achieved by changing the composition of the polymer matrix.

SO2 residues

During recent years high levels of SO2 residue on fresh produce and specifically table grapes, have become unacceptable to both the global table grape consumer and more and more often to governments and regulating bodies around the world. Retailers are striving to supply their customers with healthier and higher quality fruit on an ongoing basis.

The VinguardTM dual release SO2 gas generating sheets’ SO2 residue levels was found to be less than 2 ppm after a ten week period, and this was achieved without decreasing the VinguardTM dual release SO2 gas generating sheets efficacy as a fungicide.

Technical specs and packaging

The VinguardTM SO2 generating sheet comes in three standard sizes. Sizes and SO2 release profiles can be adjusted to individual customers’ requirements.

DR 3040-14 (for use in 30 x 40 and 30 x 50 boxes)
Dimensions Packaging
Length 345 mm Units per box 1000
Width 260 mm Boxes per pallet 40
Weight 25 g Units per pallet 40 000
Na2S2O5 14% Per 20′ container 320 000
Release area 0.0627 m2 Per 40′ container 640 000
DR 3040-14 (for use in 30 x 40 and 30 x 50 boxes)
Dimensions Packaging
Length 345 mm Units per box 500
Width 520 mm Boxes per pallet 40
Weight 50 g Units per pallet 20 000
Na2S2O5 14% Per 20′ container 160 000
Release area 0.1254 m2 Per 40′ container 320 000

* Note: This product has a perforation and can easily be divided into two DR3040-14 sheets by means of tearing.

DR 3040-14 (for use in 30 x 40 and 30 x 50 boxes)
Dimensions Packaging
Length 345 mm Units per box 500
Width 390 mm Boxes per pallet 45
Weight 37.5 g Units per pallet 22 500
Na2S2O5 14% Per 20′ container 225 000
Release area 0.0941 m2 Per 40′ container 450 000

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Ensuring 10 weeks of optimal quality