# Cooling System Fluid Hydrometer (bulb) Forsage F-9G4001A – handheld hydrometer for antifreeze and coolant testing

**URL:** https://aio.lv/en/product--forsage-f-9g4001a--11777113
**Data updated:** 2026-03-08 22:46 (EET)
**Category:** Measuring tools
**Manufacturer:** Forsage
**Manufacturer code:** F-9G4001A
**EAN:** 5905101300897
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 7.49 €
**Prices and availability valid until:** 2026-08-05 23:59
**Price without VAT (21%):** 6.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--forsage-f-9g4001a--11777113

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

Handheld cooling system fluid hydrometer in a glass bulb design by Forsage, model F-9G4001A. Designed to measure density/specific gravity of engine coolants and antifreeze liquids to assess freeze/boil protection and concentration. Simple suction operation and visual scale reading make it suitable for workshop diagnosis, vehicle maintenance and on-site coolant checks.

## Long description

Handheld cooling system fluid hydrometer in a glass bulb design by Forsage, model F-9G4001A. This hydrometer measures the density and specific gravity of engine coolants and antifreeze liquids to help determine freeze and boil protection and estimate coolant concentration. The simple suction operation and an easy-to-read graduated scale provide quick, visual results for workshop diagnostics and on-site vehicle maintenance.
Advantages
The hydrometer’s glass bulb construction delivers clear visibility of the floating indicator and scale, enabling straightforward interpretation of readings. Its handheld format and lightweight design make it convenient to carry and use in tight engine compartments. No power source is required, allowing immediate checks without setup. The device provides direct, passive measurement of fluid density suitable for routine maintenance and quick troubleshooting.
Suitable for
Checking antifreeze concentration in passenger cars and light commercial vehicles
Workshop coolant system diagnostics and preventive maintenance
On-site inspections of radiator and coolant reservoirs
Assessing freeze point and basic boil protection of ethylene- or propylene-glycol based coolants
Key specifications
Handheld glass bulb hydrometer with float indicator and printed graduated scale
Designed for measuring density/specific gravity of engine coolants and antifreeze liquids
Passive suction operation; no batteries or power required
Visual scale for quick assessment of freeze and boiling protection levels
Compact, lightweight construction for easy handling in engine bays
How to use
Insert the hydrometer tip into a sample of coolant taken from the radiator or reservoir, then draw fluid into the bulb using the built-in suction method until the float is freely floating. Read the value indicated on the visible scale at eye level to evaluate specific gravity and approximate freeze/boil protection. After taking the measurement, release the fluid back into the reservoir or dispose of it according to local regulations and rinse the hydrometer with clean water to prevent contamination between samples.
Usage recommendations
For accurate readings, sample fluid after the engine has cooled and avoid mixing fresh and used coolant samples. Use the hydrometer primarily with ethylene- or propylene-glycol based coolants and follow vehicle manufacturer guidance for required freeze and boil protection levels.

## FAQ

### How much does the Cooling Fluid Hydrometer Forsage F-9G4001A cost, and is it available for purchase?

The price is 7.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 31 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 23.07.2026 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 Forsage 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 Forsage 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/11777113/67167843_large.webp