# Water test reagent sera Calcium-Test (Ca) Calcium (Ca) 0.015 L

**URL:** https://aio.lv/en/product--sera-112856--11606541
**Data updated:** 2026-04-03 16:31 (EEST)
**Category:** Aquarium Supplies
**Manufacturer:** sera
**Manufacturer code:** 112856
**EAN:** 4001942049207
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 14.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 12.39 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sera-112856--11606541

## 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

The sera Calcium-Test (Ca) is a water test reagent designed to measure calcium levels in water. It comes in a 0.015 L hanging box and is made in Germany. This product is essential for monitoring water quality, particularly in aquariums and ponds, ensuring optimal conditions for aquatic life.

## Long description

The sera Calcium-Test (Ca) is a water test reagent for measuring calcium concentration in freshwater and marine aquaria, ponds and other controlled water systems. Supplied in a 0.015 L hanging box and manufactured in Germany, the reagent enables stepwise measurement of calcium in increments of 20 mg/l (ppm). The test kit provides enough reagent to determine approximately 7,500 mg (ppm) of calcium in total and is intended for routine monitoring to help maintain stable water chemistry for aquatic life.
Advantages
The test delivers clear, repeatable results in defined steps of 20 mg/l, allowing users to track changes in calcium concentration over time. Its compact 0.015 L format is convenient for storage and use in both hobby and professional settings. Made in Germany, the reagent follows established production standards for analytical reagents and is compatible with common aquarium maintenance routines.
Suitable for
 Monitoring calcium levels in marine and reef aquaria
 Checking calcium concentration in freshwater aquaria and garden ponds
 Routine water quality control for aquaculture or breeding setups
 Complementary testing alongside alkalinity and magnesium measurements
Key specifications
 Measured parameter: Calcium (Ca)
 Measurement resolution: 20 mg/l (ppm) steps
 Reagent volume: 0.015 L (15 ml)
 Origin: Germany
 Approximate total measurable amount: covers up to 7,500 mg (ppm) of calcium readings
How to use
Collect the required water sample according to standard aquarium testing practice. Add the reagent drops or volume as specified in the included instructions and observe the colour change or end point used for the sera Calcium-Test (Ca). Compare the result to the supplied colour chart or follow the stepwise counting method to determine calcium concentration in 20 mg/l increments. If results are outside target ranges, follow corrective procedures such as adding a calcium supplement or performing partial water changes.
Usage recommendations
Use the test regularly as part of a water quality monitoring routine. For low calcium readings, dose a suitable calcium supplement such as sera marin COMPONENT 1 Ca according to product instructions. For elevated calcium levels, perform partial water changes to reduce concentration gradually. Store the reagent in a cool, dry place away from direct sunlight and follow safety and disposal guidance on the packaging.

## Specifications

| Feature | Value |
|---|---|
| Country of origin | Germany |
| Package type | Hanging box |
| Volume | 0.015 L |
| Product type | Water test reagent |
| Measured parameters | Calcium (Ca) |
| Suitable for pond water | Yes |
| Suitable for aquarium water | Yes |

## FAQ

### How much does the Water test reagent sera Calcium-Test (Ca) cost, and is it available for purchase?

The price is 14.99 € (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

### Where can I download the instructions for Water test reagent sera Calcium-Test (Ca)?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/11606541/66783971_large.webp