Fine bubble high performance air diffusers. Semi flexible diffuser construction 300cm long 32mm diameter. Maximum recommended air flowrate is 10 cubic metres of air per hour. Materials of construction are plastic with 316 stainless steel end fittings, aslo fitted with non return valve in diffuser. Diffuser contains its own internal fused silica bead ballast. End fittings are 1/2" acetyl plastic as standard.

The Dryden Air diffuser is the leading air diffuser used in UK aquaculture, treatment of leachate water on landfill sites, sewerage treatment and numerous other applications.
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AFM grade 1 filtration media

AFM (Advanced Filtration Media) grade 1 is the standard sized AFM media equivalent to 16 x 30 grade sand. M

Supplied in 25kg sacks, grade 1 particle size 0.5mm to 1.10mm. Media should be used on top of a layer of grade 2 AFM.

Price is per 25kg sack
(For bulk quantities and dealer prices please contact us directly at aqua@drydenaqua.com )
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Oxygen standard probe

High performance, very robust galvanic oxygen probe for the measurment of dissolved oxygen in water, waste water and air. Completely sealed internals, so there is no risk of insulation failure, heavy duty Sub Sea cable, high mv out-put 6.5 mv to approx 1mg/l dissolved oxygen. Ideal probe for the Dryden Aqua, AquaTraul system or your own oxygen monitors such as multichannel or stand-alone PLC based systems.

The probe is supplied with 5 meters of cable (alternative lengths available), pack of 5 membranes and 50ml of electrolyte.
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Ozone detector card

Ozone detector card, each card can take five measurements of ozone and five cards are supplied with the pack. The card will measure ozone levels in air from 10ppb to 105ppb, this is the important range over which human health, respiratory and allergic reactions may be initiated. The card is intended as an indicator to help protect the young, elderly, people with respiratory or allergic reactions as well as the active sports person that does not want to be exposed to pollution while enjoying excercise in towns or on the top of a mountain.

The card is also important as a personnel monitor in industry and in the office, where laser printers and photocopiers and other machines all produce ozone. The legal limit in the UK for 8 hour exposure is presently set at 100ppb, any level above this concentration is un-acceptable and illegal in the work-place.
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ET120 linear air blower

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standard float LR03 switch 10m cable

This is a standard general purpose low cost float switch. The cable is PVC. A pivot point weight can be added to the cable if required.

The float switch is rated for 240v ac 10 amp inductive load,

The float switch can switch small pumps on and off directly, however it possible it is always best to use a low control voltage which is used to activate a remote relay. The remote relay can then switch heavy loads such as pumps on or off.
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Aquaculture | Water Technology | Environmental Products.....delivered worldwide

Diaphragm automatic dosing and monitoring pumps

dry1 | Pumps,centrifugal, diaphragm & monitoring pH + ORP | Diaphragm automatic dosing and monitoring pumps | Diaphragm automatic dosing and monitoring pumps

Conductivity controlled dosing pump, 1 litres/hr at 10 bar

Ref: 2-5-1-101-a

Price: £210.57 / €273.74 (Excluding VAT at 17.5%)

This pump has a built in conductivity meter using stainless steel electrodes. The monitor has a range from 500 to 20,000 microsiemens. The pump will proportionally dose a chemical into the water until the SET POINT conductivity is reached. The conductivity value is user selectable from the front panel of the pump, and as the set point conductivity is approached the pumping rate will decrease.

This range of pump will deliver from 1 to 13 l/hr at pressures between 1 and 10 bar. Power supply is 230v ac.

Conductivity controlled dosing pump, 2 litres/hr at 10 bar

Ref: 2-5-1-102-a

Price: £214.78 / €279.21 (Excluding VAT at 17.5%)

This pump has a built in conductivity meter using stainless steel electrodes. The monitor has a range from 500 to 20,000 msiemens. The pump will proportionally dose a chemical into the water until the SET POINT conductivity is reached. The conductivity value is user selectable from the front panel of the pump, and as the set point conductivity is approached the pumping rate will decrease.

This range of pump will deliver from 1 to 13 l/hr at pressures between 1 and 10 bar. Power supply is 230v ac.

Conductivity controlled dosing pump, 5 litres/hr at 7 bar

Ref: 2-5-1-105-a

Price: £214.78 / €279.21 (Excluding VAT at 17.5%)

pH controlled dosing pump, 1 litres/hr at 10 bar

Ref: 2-5-3-1-a

Price: £579.00 / €752.70 (Excluding VAT at 17.5%)

This pump has a built in pH meter. The pump will proportionally dose a chemical into the water until the set pH is reached. The set point pH value is user selectable from the front panel of the pump and the chemical to be added, either an acid or alkali, is also selected from the front panel. The dosing rate is proportional, therefore as the set point is approached the pumping rate will decrease.

This range of pump will deliver from 1 to 20 l/hr at pressures from 3 to 10 bar. Power supply is 230v ac. Please note that a pH probe is required for the unit

pH controlled dosing pump 5 litres/hr at 10 bar

Ref: 2-5-3-5-a

Price: £568.00 / €738.40 (Excluding VAT at 17.5%)

pH controlled dosing pump 10 litres/hr at 5 bar

Ref: 2-5-2-105-a

Price: £588.00 / €764.40 (Excluding VAT at 17.5%)

pH controlled dosing pump 20 litres/hr at 3 bar

Ref: 2-5-3-20-a

Price: £616.00 / €800.80 (Excluding VAT at 17.5%)

Redox controlled dosing pump, 1 litres/hr at 10 bar

Ref: 2-5-2-1-a

Price: £475.96 / €618.75 (Excluding VAT at 17.5%)

This pump has a built in redox meter. The pump will proportionally dose a chemical into the water until the set point redox potential is reached. The set point redox value is user selectable from the front panel of the pump, and the chemical to be added, either to increase ( eg sodium hypochrite) or decrease ( eg sodium bisulphite) is selected from the front panel. The dosing rate is proportional, therefore as the set point is approached the pumping rate will decrease.

This range of pump will deliver from 1 to 20 l/hr at pressures from 3 to 10 bar. Power supply is 230v ac. Please note that a redox probe is required for the unit

Redox controlled dosing pump 5 litres/hr at 10 bar

Ref: 2-5-2-5-a

Price: £466.00 / €605.80 (Excluding VAT at 17.5%)

Redox controlled dosing pump 10 litres/hr at 5 bar

Ref: 2-5-3-105-a

Price: £481.22 / €625.59 (Excluding VAT at 17.5%)

Redox controlled dosing pump 20 litres/hr at 3 bar

Ref: 2-5-2-20

Price: £505.33 / €656.93 (Excluding VAT at 17.5%)

dry1 > Pumps,centrifugal, diaphragm & monitoring pH + ORP > Diaphragm automatic dosing and monitoring pumps > Diaphragm automatic dosing and monitoring pumps

Prices shown are all ex-works Edinburgh Scotland