What’s on the Food Tests poster
A 6-row table: Substance · Test · Positive result.
Standard school and introductory laboratory tests.
- Starch — Iodine solution — Orange → blue-black
- Reducing sugar — Benedict's, heated — Blue → brick red
- Non-reducing sugar — Hydrolyse, then Benedict's — Blue → brick red
- Protein — Biuret — Blue → purple
- Lipid — Emulsion test with ethanol — Cloudy white emulsion
- Vitamin C — DCPIP — Blue → colourless
Benedict's is semi-quantitative: the colour progresses green, yellow, orange, red with increasing sugar concentration.
Questions about the Food Tests poster
- What’s on the Food Tests poster?
- A 6-row table: Substance · Test · Positive result. Standard school and introductory laboratory tests. Starch — Iodine solution — Orange → blue-black; Reducing sugar — Benedict's, heated — Blue → brick red; Non-reducing sugar — Hydrolyse, then Benedict's — Blue → brick red; Protein — Biuret — Blue → purple; Lipid — Emulsion test with ethanol — Cloudy white emulsion; Vitamin C — DCPIP — Blue → colourless. Benedict's is semi-quantitative: the colour progresses green, yellow, orange, red with increasing sugar concentration.
- Who is the Food Tests poster for?
- Food Tests belongs to the Biology section rather than to a school year, because life science is not something one grade owns. Anyone learning biochemistry can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Food Tests poster?
- Learn the reagent and the colour change. Both are asked for. A wall chart earns its place by being glanceable from where the work is happening, so Food Tests belongs on the wall where that life science work actually happens, within glancing distance, rather than filed away.
- What other posters go with Food Tests?
- Amino Acids, ATP and The Four Biomolecules sit alongside Food Tests in the Biology section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Amino AcidsATPThe Four Biomolecules
- Is the Food Tests poster free to download and print?
- Yes. Food Tests downloads as a free PDF with no account, no email and no watermark, like everything else in the Biology section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Food Tests poster print at?
- Food Tests is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Food Tests loses nothing.Printing guide
Related posters
Charts that sit alongside Food Tests on the same wall.
Browse every Biology poster, or start from the full catalogue.