Graduated syringes: 3 to 100 ml
Regular price
$6.00
Regular price
Sale price
$6.00
Unit price
/
per
$2.00 × 3 with no fees
Klarna.
These graduated syringes measure out your concentrated fertilisers, your chelated iron and your pH correctors to the millilitre, and they draw up your test water in drops. They come in seven capacities, from 3 to 100 ml, in sets or individually.
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The summary
- What you receive: graduated syringes with a Luer Lock tip, from 3 to 100 ml, in packs of 10 or 5, or individually.
- Which capacity: the one that is just above your dose, so you can read the finest graduation.
- For which liquids: concentrated fertilisers, chelated iron, pH correctors and water sampled for your tests.
- In use: one syringe per product, rinsed with clean water after each dose.
Luer Lock syringes for dosing fertiliser, trace elements and water sampling
A graduated Luer Lock syringe measures liquid to the millilitre. Its tip is threaded: a needle, a nozzle or a small pipe screws onto it and stays in place when you push the plunger. The transparent barrel carries a numbered scale, so you can see the liquid reach the line you want.
📏 Seven syringe capacities
3, 5 and 10 ml
They measure out small volumes, such as a trace element, a pH corrector or test water. They are sold in packs of 5 or 10.
20 and 30 ml
They measure out fertiliser from a small reservoir or a stock solution, in one or two draws.
50 and 100 ml
They draw fertiliser from a reservoir holding several dozen litres. They are sold individually.
Choose the syringe whose capacity is only just above your dose, because the smaller it is, the finer the reading: the 3 ml is marked every 0.5 ml, the 100 ml every 10 ml. To raise the iron content of 100 litres of water by 2 mg per litre, you need 2.7 ml of liquid chelated iron EDDHSA, which the 3 ml syringe draws up in one go. A growth fertiliser dosed at 1.8 ml per litre requires 90 ml for a 50-litre reservoir, measured with the 100 ml syringe.
🐟 Dosing in an aquaponic system
In an aquaponic system, the fish supply most of the nitrogen, and your additions are often limited to iron, potassium and pH correction. Every millilitre added ends up in the fish's water. The syringe also draws the sample for your tests: the drop-based nitrite test requires 2 × 5 ml of water, which the 5 ml or the 10 ml syringe measures without a pipette.
Liquid iron dosed without scales
If you are topping up the iron in your tank, the liquid chelated iron EDDHSA 6% can be drawn up directly with the syringe, with no weighing or dilution. Keep a 3 or 5 ml syringe for it, and you can repeat the same dose at each addition, after measuring with an iron test.
One syringe per liquid
Keep one syringe per product, with its name written on it in marker. Liquid pH- corrector contains nitric and phosphoric acids, which must not meet chelated iron in the same syringe. Rinse each syringe with clean water after use, and wear gloves and goggles when drawing up a pH corrector, as it is classed as corrosive.
Technical specifications
The syringe
- Nozzle
- Threaded Luer LockA needle, a nozzle or a pipe screws on without leaking
- Graduation
- Priced on a transparent bodyFrom 0.5 ml to 0.5 ml on the 3 ml, from 10 ml to 10 ml on the 100 ml
Use
- Liquids dosed
- Fertilisers, trace elements, pH correctors
- Sampling
- Test water in drops5 ml of sample for most tests
Maintenance
- After each dose
- Rinse with clean waterPlunger pulled and pushed several times
- Several products
- One syringe per liquidProduct name written in marker pen on the body
To budget for separately
- Liquid to dose
- Liquid chelated iron EDDHSA
- Water analysis
- Nitrite test drops
In the box
- 1 to 10 graduated Luer Lock syringes, depending on the size chosen
Capacities, pack sizes and nozzle recorded on 02/10/2026. Numbered graduations recorded from the product photos. Dosing equipment for cultivation, not for medical use.
Which syringe for your dose?
Seven sizes, from the small dose of trace element to the large volume of fertiliser.
Small dose or large reservoir
The right syringe holds slightly more than your usual dose.
| 3 ml, pack of 10Your choice | 5 ml, pack of 10Your choice | Recommended 10 ml, pack of 5Your choice | 20 ml, pack of 5Your choice | 30 ml, individualYour choice | 50 ml, individualYour choice | 100 ml, individualYour choice | |
|---|---|---|---|---|---|---|---|
| The syringe | |||||||
| Capacity | 3 ml | 5 ml | 10 ml | 20 ml | 30 ml | 50 ml | 100 ml |
| Syringes by size | 10 | 10 | 5 | 5 | 1 | 1 | 1 |
| Numbered graduations | every 0.5 ml | each ml | every 2 ml | every 5 ml | every 5 ml | every 10 ml | every 10 ml |
| The use | |||||||
| For dosing | trace elements, liquid iron, pH | trace elements, water intake for testing | trace elements, water intake for testing | fertiliser, small tank | fertiliser, small tank | fertiliser, large tank | fertiliser, large tank |
| The price | |||||||
| Price | $6.00 | $7.00 | $7.00 | $8.00 | $5.00 | $11.00 | $8.00 |
3 ml, pack of 10
The syringe
Capacity3 ml
Syringes by size10
Numbered graduationsevery 0.5 ml
The use
For dosingtrace elements, liquid iron, pH
The price
5 ml, pack of 10
The syringe
Capacity5 ml
Syringes by size10
Numbered graduationseach ml
The use
For dosingtrace elements, water intake for testing
The price
10 ml, pack of 5Recommended
The syringe
Capacity10 ml
Syringes by size5
Numbered graduationsevery 2 ml
The use
For dosingtrace elements, water intake for testing
The price
20 ml, pack of 5
The syringe
Capacity20 ml
Syringes by size5
Numbered graduationsevery 5 ml
The use
For dosingfertiliser, small tank
The price
30 ml, individual
The syringe
Capacity30 ml
Syringes by size1
Numbered graduationsevery 5 ml
The use
For dosingfertiliser, small tank
The price
50 ml, individual
The syringe
Capacity50 ml
Syringes by size1
Numbered graduationsevery 10 ml
The use
For dosingfertiliser, large tank
The price
100 ml, individual
The syringe
Capacity100 ml
Syringes by size1
Numbered graduationsevery 10 ml
The use
For dosingfertiliser, large tank
The price
Capacities and pack sizes recorded on 02/10/2026.
Help choosing
Which syringe for your dose
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Estimated time
It covers preparing your order and then the transit time quoted by the carrier, counted in working days.
It is not a guaranteed delivery date: public holidays, peak periods, customs or a carrier delay can extend it. The exact amount, in your currency, is worked out in the cart once your address is entered.
The exact shipping cost is calculated at checkout, based on the total weight of your order and the destination. Lead times start from dispatch and remain estimates. For a destination not listed here, write to us at contact@univers-aquaponie.com.
Frequently asked questions
6 questions
6 key questions
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