Transparent graduated Luer Lock syringes from 3 to 100 ml, arranged by capacity with a close-up of the threaded tip

Graduated 10 ml syringe standing upright, with a close-up of its threaded Luer Lock tip

3 ml graduated Luer Lock syringe, marked every 0.5 ml, front view on a white background

Graduated 5 ml Luer Lock syringe, marked from 1 to 5 ml, front view on a white background

Graduated 20 ml Luer Lock syringe, marked every 5 ml, front view on a white background

30 ml graduated Luer Lock syringe with a transparent barrel, marked every 5 ml, on a white background

50 ml graduated Luer Lock syringe, marked every 10 ml, with its black-sealed plunger

Large 100 ml graduated Luer Lock syringe, marked every 10 ml, front view on a white background

Graduated syringes: 3 to 100 ml

Name: Graduated syringes: 3 to 100 ml
Brand: CIS Hydroponics
SKU: SER-LL-3ML-X10
Availability: InStock

4,90 €

1,63 € × 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.

Ref. SER-LL-3ML-X10·Dosing and measuring

Format : 3 ml, pack of 10

3 ml, pack of 10

5 ml, pack of 10

10 ml, pack of 5

20 ml, pack of 5

30 ml, individual

50 ml, individual

100 ml, individual

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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	4,90 €	5,90 €	5,50 €	6,50 €	4,20 €	9,50 €	6,50 €

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.

Estimate your
delivery time

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

Which syringe capacity should I choose for my dose?

Usual dose	Syringe	Example
Up to 3 ml	3 ml	Liquid iron for 100 L
3 to 10 ml	5 or 10 ml	Sample for a drop test
10 to 30 ml	20 or 30 ml	Fertiliser for a 10 L reservoir
30 to 100 ml	50 or 100 ml	Fertiliser for a 50 L reservoir