Composition and Purity Analysis Kits

Nutrition and purity test kits are rapid test strips, chemical test sets and simple measuring instruments used to assess the composition, residue status and purity of bee products such as honey, royal jelly and pollen. Some of these kits are genuinely useful for preliminary screening in the field; but whether a honey is fake, the real quality of royal jelly or the origin of a product cannot be reliably determined at home. Definitive results come from analysis by accredited laboratories.

What can test kits measure, and what can't they?

Many products and methods are marketed as a "purity test" or "fake honey test". To assess them properly, a beekeeper needs to sort the kits by what they actually do:

Kits and instruments that can be used in the field

Measuring moisture: the refractometer

The beekeeper's most valuable measuring tool. It gives honey moisture in a few seconds; moisture is the most important indicator of fermentation risk. In the Turkish Food Codex, the upper moisture limit for most honeys is 20 percent. Its use and calibration are described in detail on the moisture and pH meters page.

Rapid residue test strips

These strips work on the lateral flow principle (immunochromatography), much like a pregnancy test: the diluted sample is dropped onto the strip and the lines are read after a set time. For honey, kits have been developed for antibiotic groups such as tetracyclines, sulphonamides and chloramphenicol, and for some other residues.

• Advantage: Fast and needs no laboratory; used for preliminary screening at the point of purchase or before export.
• Limitation: Each kit detects only its own target group of substances; a negative result does not mean "there are no residues in the honey".
• Confirmation: A positive or doubtful result must be checked in an accredited laboratory with a confirmatory method.
• Choice: Choose a kit validated for honey; respect the expiry date and storage conditions (most are kept in the refrigerator).

Field tests working in the same way also exist for bee diseases. But for notifiable diseases such as American and European foulbrood, do not start treatment on your own whatever the field test result: isolate the hive, do not move frames or tools, and report it to the official veterinary service / local agriculture authority.

Simple chemical tests

There are simple tests done in test tubes for training or to get a rough idea; for example, you can get an idea of honeydew characteristics by seeing whether a honey solution turns cloudy with a particular reagent. These tests are qualitative and open to interpretation; they carry no weight as evidence in sales, certification or disputes.

Can you test for fake honey at home?

No, not reliably. Methods such as dropping honey into a glass of water, smearing it on a paper towel, the thumb test or setting it alight with a match give results that depend on the honey's moisture, temperature and state of crystallisation; a well-made syrup can behave the same way. Crystallisation is not a sign of adulteration either; it is a natural property of real honey.

To detect adulteration, laboratories use several methods together: stable carbon isotope analysis (C4 sugar), foreign sugar markers, NMR profiling, pollen analysis, HMF and diastase. What these methods show and their limitations are described on the honey adulteration and origin testing page.

How is the nutritional value of bee products measured?

"Nutrition analysis" kits are mostly designed for general foods and do not give reliable results with bee products. The nutritional and quality values of bee products are measured in the laboratory:

• Honey: Sugar composition (fructose, glucose, sucrose), moisture, HMF, diastase, free acidity, electrical conductivity, proline.
• Royal jelly: Water content, protein, sugars and the fatty acid specific to royal jelly, 10-HDA. The international royal jelly standard (ISO 12824) specifies at least 1.4 percent 10-HDA in pure fresh royal jelly; this value can only be measured in the laboratory by chromatography.
• Pollen and bee bread: Moisture, protein, ash, microbial load; if needed, pesticide residues and botanical origin.
• Propolis: Total phenolic and flavonoid content; active compounds are measured in the laboratory.

How do you send a sample to a laboratory?

1. Take a representative sample: Prepare the sample from well-mixed honey from the batch, or by combining samples taken from several hives.
2. Use a clean, dry container: The sample container should be odourless, food-grade and have a tight lid.
3. Send enough: Ask the laboratory in advance how much is needed; several analyses need more sample.
4. Label it: Batch number, apiary, harvest date, product type and the analyses requested.
5. Keep a reference sample: Seal and keep a jar from the same batch.
6. Send under the right conditions: Honey is sent at room temperature; royal jelly and fresh pollen go in a cold chain.

What should you look for when choosing a laboratory?

• Accreditation: Ask whether it is accredited for the analysis you need; an accredited report is valid for commercial and official purposes.
• Method: The report should state that the analysis was carried out using an internationally recognised method.
• Scope: Choose analyses that suit your purpose, such as pollen analysis for a monofloral honey claim, or the residue package the buyer requires for export.
• Consultation: Discuss with the laboratory which analysis package you need before sending samples.

Common mistakes

• Declaring honey "fake" or "real" on the basis of a home test: This is both misleading and unfair to honest producers.
• Treating a single rapid test as definitive: A rapid test is preliminary screening.
• An out-of-date kit: Can give false negatives or false positives.
• An unrepresentative sample: A single jar may not represent the whole batch.
• Not keeping records: An analysis report that cannot be matched to a batch number is useless.