# Hydrometer for Measuring Salinity, sera model 08212

**URL:** https://aio.lv/en/product--sera-08212--11003255
**Data updated:** 2026-03-11 11:58 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** sera
**Manufacturer code:** 08212
**EAN:** 4001942089104
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 13.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 11.56 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sera-08212--11003255

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Hydrometer for measuring salinity from sera, model 08212. A handheld floating hydrometer designed to determine salt concentration in aquarium and aquarium-related water. Provides a quick visual reading of relative salinity for routine checks, water changes and mixing marine or brackish water. Simple to use without electronics; suitable for hobbyists and small-scale aquarium maintenance.

## Long description

The sera Hydrometer for Measuring Salinity (model 08212) is a handheld floating instrument designed to estimate the salt concentration in aquarium and related waters. It provides a fast visual indication of relative salinity without electronics, making it suitable for routine checks, water changes and mixing marine or brackish water. The device is compact, easy to store and intended for hobbyists and small-scale aquarium maintenance who need a simple tool for monitoring salinity.
Advantages
This hydrometer offers straightforward operation with an immediate visual reading and no need for batteries or calibration electronics. Its floating design allows quick sampling directly from the aquarium or mixing containers, and the construction is lightweight for easy handling. The instrument is durable enough for frequent routine use and supports rapid decisions during water changes or when preparing replacement water.
Suitable for
Measuring relative salinity in marine aquariums
Checking salt concentration during water changes
Mixing and testing brackish water for aquaria
Regular monitoring in hobbyist and small-scale setups
Key specifications
Handheld floating hydrometer design for direct sampling
Provides quick visual indication of relative salinity
No electronics, batteries or digital displays required
Compact and lightweight for easy handling and storage
Suitable for freshwater-to-marine range assessments (brackish and marine focus)
How to use
Rinse the hydrometer in freshwater and then place it gently into the aquarium or prepared water sample so it can float freely. Read the scale at the waterline to determine the relative salinity value indicated. For mixing saltwater, measure the sample after dissolving salt and adjust the mixture until the hydrometer reading reaches the desired salinity range. After use, rinse the instrument with freshwater and store it in a dry place.
Usage recommendations
Perform measurements at stable temperatures close to the aquarium’s normal operating temperature and avoid tilting the hydrometer while reading. Use the device for routine checks rather than precision laboratory analysis; for exact salinity control, complement this hydrometer with a refractometer or electronic salinity meter if higher accuracy is required.

## FAQ

### How much does the Hydrometer sera 08212 cost, and is it available for purchase?

The price is 13.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 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 14.07.2026 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 sera 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 sera 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/11003255/61649419_large.webp