Harris Sulphite Test Strips (25 strips)

B2B-2617

Regular price £6.75



This test allows a quick and easy method to determine the sulphite in solution.

Sulphite is commonly used as an oxygen scavenger in process and boiler water. To avoid resulting in excessive levels of sulphite, the concentrations need to be controlled for which the Sulphite Indicator Strips can be used. These strips may also be used to control sulphite concentrations in food treated with sulphur compounds and in the process of winemaking.

This test will indicate the ranges of 10, 50, 100, 250 and 500 mg/L (ppm).

The term ‘sulfites’ is an inclusive term for sulfur dioxide (SO2). SO2 is a preservative and widely used in winemaking (and most food industries), because of its antioxidant and antibacterial properties. SO2 plays a very important role in preventing oxidization and maintaining a wine’s freshness. In fact, there are really very few wines that are made without some use of SO2 as wines without any SO2 generally have a shorter shelf life – about six months, and need to be kept in perfect storage conditions. Given that a winemaker has very little control over the wine’s storage conditions SO2 is so widely used to help guarantee that the bottle of wine you open will be fresh and clean, and taste as intended.

A target with a level of 50 mg/L  at fruit crushing, or up to 100 mg/L if you suspect any problem, such as mouldy fruit is ideal. Any higher than this and the yeast will find it difficult to ferment.

In the EU the maximum levels of sulfur dioxide that a wine can contain are 210 ppm for white wine, 400 ppm for sweet wines and 160 ppm for red wine.
It may seem strange that Red wines typically contain fewer sulfites but they contain tannin, which is a stabilizing agent, and also almost all red wines go through malolactic fermentation. Therefore, less sulfur dioxide is needed to protect the wine during winemaking and maturation.

Any commercial wine containing more than 10 parts per million (ppm) of sulfur dioxide must state on the label ‘contains sulfites’.

SHOPPING AND ONLINE DELIVERY METHODS

In normal circumstances we aim to despatch all orders received before 2pm the same working day via the method of shipment chosen at checkout, however, with the restrictions and safety measures imposed by the Covid-19 outbreak this isn’t always possible however if you choose express delivery we will endeavour to ensure your order is despatched that very same day.

We offer FREE STANDARD DELIVERY for all orders over £50 to most regions of the UK.

For orders under 5Kg, we usually use Royal Mail.

For any order over 5Kg we use DPD who can handle heavier and bulkier packages.

Unfortunately, for certain regions within the UK there is an extra charge for delivery, as per the table below (Postcode Areas with Delivery Surcharge)

STANDARD DELIVERY TO MOST REGIONS OF THE UK

  • £3.50
  • Up to 5 Working Days
  • Insured Delivery Service
  • FREE for orders £50.00 or above

EXPRESS DELIVERY TO MOST REGIONS OF THE UK

  • £4.95
  • Order Before 2pm for
  • Next Working Day Delivery
  • UK Mainland Only
  • Any Express orders placed on Saturday or Sunday will be dispatched the next working day, ie Monday, unless a Bank Holiday.

POST CODE AREAS WITH DELIVERY SURCHARGE

Region Post Code Range Service Shipping Cost

Northern Ireland

BT1 - BT99

Standard - 2 Days

£ 15.00

Isle of Man

IM1 - IM9

Standard - 2 Days

£ 18.00

Channel Islands

JE2 -JE3
GY1 – GY10

Standard - 2 Days

£ 15.00

Scottish Highlands

AB36 - AB38
AB55 - AB56
FK17 - FK21
IV1 – IV39
IV52 - IV54
IV63
KW1 - KW14
PA21 - PA40
PH19 - PH26
PH30 - PH41
PH49 - PH50

Standard - 2 Days

£ 15.00

Scilly Isles

TR21 - TR25

Standard - 2 Days

£ 20.00

Scottish Islands

HS1 - HS9
IV40 - IV51
IV55 - IV56
KA27 - KA28
KW15 - KW17
PA20
PA41 - PA49
PA60 - PA78
PH42 - PA44
ZE1 - ZE3

Standard - 2 Days

£ 16.00

MORE DELIVERY INFORMATION

Due to size restrictions through some courier networks, some items are available on Standard Delivery only.

RETURNS INFORMATION

In the unlikely event you wish to return a product please contact our customer services via email to sales@brew2bottle.co.uk, stating your order number in the subject or via telephone 01254 315082. 

If for any reason your package arrives with signs of damage please sign for the package as damaged.