# Water test kit Tetra Test NO2- — Nitrite (NO2−) measurement, 2 × 10 ml

**URL:** https://aio.lv/en/product--tetra-tetra-test-no2-2-x-10-ml--1015396
**Data updated:** 2026-03-11 11:41 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** Tetra
**Manufacturer code:** Tetra Test NO2- 2 x 10 ml
**EAN:** 4004218723429
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 16.49 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 13.63 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tetra-tetra-test-no2-2-x-10-ml--1015396

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.07.2026 | free |
| Pickup points | 22.07.2026 | 1.89 EUR |
| Courier delivery to door | 22.07.2026 | 4.99 EUR |

## Summary description

Tetra Test NO2- is a water test kit designed to measure nitrite (NO2−) levels. Supplied as two 10 ml reagents (total 0.02 L), it enables quantitative testing of aquarium or pond water for nitrite contamination. The kit is intended for routine water quality checks to detect elevated nitrite that can harm fish and aquatic life.

## Long description

Tetra Test NO2- is a liquid reagent kit for quantitative measurement of nitrite (NO2−) concentration in aquarium and pond water. The kit contains two 10 ml reagents formulated to provide reliable and precise nitrite readings for routine monitoring of water quality. Regular testing with this kit helps detect elevated nitrite levels that can be harmful to fish and other aquatic organisms.
Advantages
The test kit offers accurate nitrite detection through a colorimetric reaction, enabling clear interpretation of results. Supplied as two compact 10 ml reagent vials, it is suitable for repeated measurements while taking minimal storage space. The reagents are designed for routine use, providing consistent performance when handling and measuring samples according to instructions.
Suitable for
Freshwater and garden pond monitoring
Routine aquarium water quality checks
Pre-release testing after biological changes (e.g., new fish, filter media changes)
Investigating unexplained fish stress or illness related to water chemistry
Key specifications
Analyte: nitrite (NO2−)
Format: liquid reagents, 2 × 10 ml
Measurement type: colorimetric quantitative test
Intended use: aquarium and pond water
Storage: store reagents in a cool, dry place away from direct sunlight
How to use
Collect a sample of aquarium or pond water in a clean glass or plastic container following the kit instructions. Add the specified number of drops from each reagent vial into the sample, mix gently, and allow the color reaction to develop for the recommended time. Compare the resulting color against the provided color chart or follow the numerical reading procedure to determine nitrite concentration. Rinse testing vessels and caps with fresh water after use and close reagent bottles tightly.
Usage recommendations
Perform tests regularly as part of routine maintenance: more frequently during new tank cycling, after adding new fish, or when fish show signs of stress. If elevated nitrite is detected, follow water change and filtration recommendations to reduce concentrations and retest to confirm improvement.

## Specifications

| Feature | Value |
|---|---|
| Volume | 0.01 L |
| Product type | Water test kit |
| Quantity per pack | 2 pc(s) |
| Measured parameters | Nitrite (NO2–) |
| Suitable for aquarium water | Yes |

## FAQ

### How much does the Tetra Test NO2- water test kit 2 × 10 ml cost, and is it available for purchase?

The price is 16.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 30 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 17.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Tetra products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Tetra service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/1015396/57842941_large.webp