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Hanna HI731335N Benchtop & Turbidity Cuvette Caps, 4 Pack Default Title Cuvette Caps Hanna Instruments
Hanna HI731335N Benchtop & Turbidity Cuvette Caps, 4 Pack Default Title Cuvette Caps Hanna Instruments

Hanna HI731335N Benchtop & Turbidity Cuvette Caps, 4 Pack

$20.89

    Keep your cuvette setup complete. Genuine Hanna screw-on replacement caps for specified benchtop photometers and turbidity meters.

    • Four HI731335N replacement caps per pack
    • Exact-model compatibility guide below
    • Caps only; glass cuvettes sold separately

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Refresh the closure. Keep the cuvette in service.

HI731335N is the four-pack of screw-on replacement caps for specified Hanna benchtop photometers and portable or benchtop turbidity meters. Replace the cap you need without buying another complete glass-cuvette set.

Four caps per order. Glass cuvettes, instruments and testing supplies are not included.

Hanna HI731335N genuine replacement cuvette caps — pack of four
HI731335N manufacturer reference image; the retail pack contains four caps.

Find your exact instrument

Benchtop photometers and turbidity instruments use different cap selections across the Hanna range. The exact models below document HI731335N; this is not a universal portable-meter cap.

HI833 benchtop photometers: HI83300, HI83303, HI83305, HI83306, HI83308, HI83314, HI83325, HI83326, HI83399.

Turbidity and combination instruments: HI83414, HI83749, HI847492, HI88703, HI88713, HI93414, HI98703, HI98713.

Before ordering, check the accessory code in your instrument documentation and the cuvette assembly in use. Cuvette diameter alone does not establish cap fit.

Replace the cap—not the whole cuvette

Hanna identifies HI731335N as a replacement cap for HI731331 glass sample cuvettes on the specified turbidity models. The benchtop photometers listed above independently name HI731335N in their accessory lists. That exact part-number match is the useful buying test, even when different instruments use similar-looking glass.

This listing makes no locking-index feature claim for HI731335N. Do not transfer the HI731336N portable-photometer feature description to this different cap.

Know exactly what arrives

  • Included: four HI731335N screw-on replacement cuvette caps.
  • Not included: glass cuvettes, separate inner stoppers, reagents, standards or a meter.
  • Photo guide: the manufacturer image shows the four-cap pack.

Why keep a spare four-pack?

A missing or damaged closure can take an otherwise usable sample cuvette out of the workflow. Keeping the correct replacement code beside your instrument makes it easier to return a cuvette to use and avoids an improvised cap swap between different meter families.

A four-pack is practical for replenishing several cuvettes or keeping replacements with a field kit or shared bench station. Store the pack with its catalog number so the next operator can identify the correct cap.

A simple cap-and-cuvette bench routine

Before testing, inspect the cap and cuvette closure area for visible damage or residue. Follow your instrument’s cleaning procedure, keep the cuvette exterior clean and dry, and seat the cap as instructed before placing the cuvette into the holder.

After the measurement, clean the sample-contact parts according to the method and allow them to dry before storage. Keep replacement caps protected from bench debris. Replace damaged caps rather than forcing the fit; inspect the glass separately because a new cap cannot correct a scratched or damaged cuvette.

Frequently Asked Questions

How many caps are in one pack?

One order supplies four HI731335N replacement caps. The main photo shows the four caps.

Are glass cuvettes included?

No. This is a caps-only replenishment pack. Glass cuvettes, separate inner stoppers, reagents, calibration standards and the instrument are not included.

Which instruments use these caps?

The instrument guide above lists nine HI833 benchtop photometers and eight turbidity or combination instruments whose documentation names HI731335N. Check the full model and accessory code.

Can HI731336N and HI731335N be substituted?

Do not substitute them. HI731336N has a documented locking indexing tab for modern portable photometers; HI731335N is specified for particular benchtop and turbidity instruments. Similar names and cuvette sizes do not establish interchangeability.

What does the N suffix mean for my purchase?

Treat N as part of the exact catalog number. It does not by itself mean newer or replacement. HI731335 without N is a separate current cap for HI96-series portable photometers, not the same product as HI731335N.

Will these fit any round cuvette of the same diameter?

No universal diameter-based fit is claimed. Match the cap catalog number, instrument model and cuvette assembly specified in your documentation rather than selecting by a nominal glass diameter alone.

What does a replacement cap do for measurement?

HI731335N replaces the screw-on closure on the documented cuvette setup. It is not a reagent or calibration standard, and no HI977 locking-index feature is claimed for this separate part.

When is it sensible to replace a cap?

Keep replacements ready for a lost cap or visible damage that prevents normal seating. Inspect and clean the closure as your instrument procedure directs, and do not force a poor fit. Check the glass separately: a cap replacement cannot repair it.

    Product Specifications

    SpecificationDetail
    ManufacturerHanna Instruments
    Catalog number / MPNHI731335N
    Product formScrew-on replacement cuvette caps
    Pack contents4 caps; glass cuvettes not included
    ApplicationSpecified benchtop photometers and turbidity instruments
    Instrument fitListed HI833 benchtop and turbidity models; exact model guide in Product Details.
    Selection ruleMatch the full cap catalog number and exact instrument model

    Ordering Information

    SpecificationDetail
    Catalog numberHI731335N
    Order unitOne pack of 4 caps
    Included4 replacement caps only
    Sold separatelyGlass cuvettes and instrument

    Shipping, Return, and Warranty Policy

    At Blue Tiger Scientific, we are proud to distribute authentic Hanna Instruments products. The following policies apply to all purchases made through our store.

    Shipping Policy

    • All orders are shipped via FedEx from Hanna Instruments' fulfillment center in Smithfield, Rhode Island.
    • FedEx Ground is the standard method; expedited options (2-Day, Overnight) are available for an additional cost.
    • Hanna Instruments only ships to residential or business addresses within the United States (no PO Boxes).
    • Orders placed after business hours, weekends, or holidays will ship the next business day, pending product and carrier availability.
    • Shipping timelines may vary depending on product availability, order size, and carrier logistics.
    • Blue Tiger Scientific and Hanna Instruments are not responsible for carrier delays, weather-related disruptions, or other unforeseen delivery issues once the order has shipped.

    Return Policy

    • All return requests must be coordinated directly with Blue Tiger Scientific before a product is sent back.
    • Products must have a Return Merchandise Authorization (RMA) number issued by Blue Tiger Scientific before being returned.
    • Products must be returned in new or like-new condition, with the original packaging and proof of purchase (such as an invoice or packing slip).
      Customers are responsible for return shipping costs unless otherwise stated.
    • Unauthorized returns (without an RMA) will be refused and returned at the customer's expense.
      Returns are subject to inspection and approval. Products not in acceptable condition may be denied credit.
    • Some products, such as custom-built, special order, and hazardous materials, may not be eligible for return.

    Warranty Policy

    • Hanna Instruments' products are covered by their Limited Warranty against defects in materials and workmanship under normal use.
    • All warranty claims and services are handled directly by Hanna Instruments.
    • Warranty periods vary by product. If unspecified, the standard warranty term is 18 months from the Hanna Instruments factory ship date.
    • If you experience an issue believed to be covered under warranty, please contact Hanna Instruments for guidance on how to submit your warranty request to Hanna Instruments.
    • Customers must follow Hanna Instruments' warranty submission process, including providing a claim number, product model and serial number, and a detailed description of the issue.
    • Hanna Instruments will determine whether products are repaired, replaced, or otherwise serviced under warranty.
    • Note: Warranty coverage does not apply to damage caused by misuse, accidents, unauthorized repairs, or improper storage and handling.

    Important Notes

    • Some Hanna Instruments products are custom-made or built to order. Shipping will occur once the product is ready.
    • In the event of backorders, you may request partial shipments.
    • Delays beyond our control (e.g., material shortages, import delays, or carrier issues) may occasionally occur.

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