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DIGITAL SEAWATER REFRACTOMETER Default Title Heathrow Scientific
DIGITAL SEAWATER REFRACTOMETER Heathrow Scientific
DIGITAL SEAWATER REFRACTOMETER Heathrow Scientific
DIGITAL SEAWATER REFRACTOMETER Default Title Heathrow Scientific
DIGITAL SEAWATER REFRACTOMETER Heathrow Scientific
DIGITAL SEAWATER REFRACTOMETER Heathrow Scientific

Heathrow Scientific Digital Seawater Refractometer | 48202

$412.00

    Read salinity, chlorinity, specific gravity and refractive index with a portable digital seawater instrument.

    • MDX-202; automatic temperature compensation
    • 4 application-specific scales
    • 1 instrument with case, pipet, battery and manual

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Most items ship same day

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Manufacturer Warranty

All products are covered by manufacturer warranty

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After-Sale Support

24/7 support

Choose the scale for the sample

Read salinity, chlorinity, specific gravity and refractive index with a portable digital seawater instrument.

Heathrow Scientific Digital Seawater Refractometer | 48202 — Choose the scale for the sample
Manufacturer digital-family photograph from this product page. Screen values and displayed model are illustrative; see the specifications for the supplied model.

Choose the scale for the sample

The MDX-202 puts four seawater-related outputs in one instrument: salinity, chlorinity, specific gravity and refractive index. For aquatic and aquaculture workflows, choose the scale requested by the monitoring procedure before reading; a chlorinity value and a total-salinity value are not the same output. Record the selected scale with the result so a later comparison uses the same units.

A repeatable small-sample reading sequence

The matching manual calls for a daily zero check with clean distilled water, a clean dry sample well and a closed prism cover. For a reading, place 4–5 drops in the well, close the cover and press READ. The instrument supports individual readings and a 15-reading continuous loop. Allow a sample at a different temperature to acclimate as described in the manual; automatic temperature compensation is not a reason to skip that step.

Heathrow Scientific Digital Seawater Refractometer | 48202 — A repeatable small-sample reading sequence
Manufacturer digital-family photograph from this product page. Screen values and displayed model are illustrative; see the specifications for the supplied model.

Prepare the instrument for the next sample

The stainless-steel prism well and removable grip/cover support access between readings. Follow the model manual’s care instructions, especially after corrosive or acidic samples, and avoid getting sample on the plastic housing. The detecting unit is rated IP67 and the remainder IP65; keep those two ratings distinct rather than describing the whole device as suitable for immersion. A hard-shell protective case, disposable pipet, AAA battery and manual accompany the instrument.

Confirm the order unit

48202 — 1 Each.

Related choices for your workflow

Heathrow Scientific Handheld Salinity Refractometer | 43036

Compare the handheld optical salinity model when an eyepiece-based reading is preferred to this digital multi-scale workflow.

Heathrow Scientific Portable Water Testing Field Kit

For a broader water-testing task, compare the field kit contents rather than assuming a seawater refractometer covers every water parameter.

Frequently Asked Questions

Which model is supplied?

MDX-202; the application scales are listed in the specification table. Manufacturer family photographs may show illustrative screen values.

What is the main application scale?

Salinity: 0–100 ppt; resolution 1 ppt; accuracy ±2 ppt.

Does it have refractive index?

Yes, 1.3330–1.4200 nD. Resolution is 0.0001 nD and stated accuracy is ±0.0003 nD.

How is it zeroed?

Use clean distilled water and the ZERO sequence in the matching manual, with the prism cover closed. The manual recommends a daily zero check.

Can it take repeated readings?

Yes. It supports single readings and a 15-reading continuous loop.

Is the entire instrument IP67?

No. The detecting unit is IP67; the remainder is IP65. Follow the manual for care and exposure limits.

What comes with the instrument?

A rubber grip and prism cover, hard-shell protective case, disposable pipet, AAA battery and instruction manual.

    SpecificationDetail
    BrandHeathrow Scientific
    Product lineVEE GEE
    ModelMDX-202
    Salinity0–100 ppt; resolution 1 ppt; accuracy ±2 ppt
    Chlorinity0–57 ppt; resolution 1 ppt; accuracy ±2 ppt
    Specific gravity1.000–1.075; resolution 0.001; accuracy ±0.002
    Refractive index1.3330–1.4200 nD; resolution 0.0001; accuracy ±0.0003
    Temperature compensationAutomatic
    Reading modesSingle or 15-reading continuous loop
    Protection ratingsIP67 detecting unit; IP65 remainder
    PowerAAA battery included
    Manufacturer warranty1 year

    Ordering Information

    Cat. No.DescriptionPack
    48202Digital Seawater Refractometer | 482021 Each

    Heathrow Scientific: Shipping, Returns & Manufacturer Support

    Blue Tiger Scientific is your reseller and point of contact for orders and returns purchased through our store.

    Shipping & Availability

    Shipping charges, available delivery methods and any delivery estimate are confirmed with your Blue Tiger Scientific order or quote. Contact Blue Tiger Scientific before ordering if you need a particular delivery date or special shipping arrangements. Supplier availability and carrier schedules can affect fulfillment; a delivery estimate is not a guaranteed arrival date.

    Returns Through Blue Tiger Scientific

    Start every return, exchange or order-related issue with Blue Tiger Scientific. Provide your order number, product catalog number, quantity and the reason for your request. For damage, missing items or an incorrect item, retain the packaging and include photographs where applicable.

    Do not send goods to Blue Tiger Scientific or Heathrow Scientific without return authorization and shipping instructions from Blue Tiger Scientific. We will coordinate any required manufacturer Return Goods Authorization (RGA). Return eligibility, any applicable charges and the approved shipping destination will be confirmed for your specific request before you ship. Keep the product, original packaging and supplied materials together while your request is reviewed.

    Manufacturer Warranty & Service

    Heathrow Scientific handles manufacturer warranty assessments, product service and other manufacturer-specific technical matters. Blue Tiger Scientific can help coordinate these requests and provide purchase documentation. If a return is required, arrange it through Blue Tiger Scientific before shipping.

    For this product, the manufacturer publishes a warranty period of 1 year. Coverage, exclusions and service follow the applicable manufacturer terms; contact Blue Tiger Scientific to coordinate assessment. Retain proof of purchase.

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