Skip to product information
1 of 2

D-D The Aquarium Solution

Refractometer

Refractometer

Regular price £39.99 GBP
Regular price Sale price £39.99 GBP
Sale Sold out
Tax included. Shipping calculated at checkout.

Questions about this product?

Shipping & Returns

Free next day shipping on orders over £50

Free same day local delivery (20 miles) on orders over £100

Orders under £50 can be collected in store (free) or shipped next day for £5.99

Tanks can be collected in store or drop shipped to your address for free in 1-2 weeks

Hand held instrument for the measurement of the TRUE Salinity and Specific Gravity (S.G.) of sea water by refractive index.

 

What is different about the D-D Seawater Refractometer?

Almost all hand held salt water refractometers available to the hobby are designed and calibrated for the testing of brine solutions, i.e. sodium chloride, and are not calibrated for the refractive index of natural sea water.

Even though the largest percentage of salt in the sea is sodium chloride, the presence of other significant ions such as magnesium and calcium in natural sea water results in a different refractive index relative to that of brine. A standard salt (brine) refractometer will therefore not give the correct salinity for natural sea water (NSW) and a conversion factor must be applied.

For example a 35ppt solution of NSW has the same refractive index as a 36.5ppt solution of brine.

After extensive development, D-D'™s new ATC refractometer addresses this issue as the scale is calibrated for seawater giving true salinity results for aquarium use when correctly calibrated and greater accuracy than previously attainable.

Our refractometers feature a copper internal body which conducts heat faster than cheaper aluminium and plastic versions for faster and more accurate auto temperature compensation.

View full details
  • Free Shipping on dry goods orders over £50

    Spend over £50 and receive free next day delivery on your order. All orders can be collected free in-store.
    Spend £250 on Corals for free livestock shipping with APC

  • Any questions about this product?

    Send us a message on facebook, instagram, Google, or send us an email if you need to know more about any of our products. We'll always get back to you within a day!