Work it out.
Calculators
Standardisation of milk (Pearson's square)
Pearsons firkant
Heating energy for pasteurisation
Q = m·c·ΔT
Food cost and contribution margin
Procentregning
Cheese yield (Van Slyke formula)
Van Slyke-formlen (klassisk osteudbytte-model, Journal of Dairy Science)
Rennet dosing
Producentdata (osteløbe, IMCU-dosering)
Acidity (Soxhlet-Henkel)
Soxhlet-Henkel-metoden (klassisk mejerikemi)
CIP cleaning: concentration
Producentdata (alkalisk CIP-rengøring, mejeriudstyr)
Dilution of cleaning agent
Ratio arithmetic
Butter: check against the marketing standard
Forordning (EU) nr. 1308/2013, bilag VII, del VII (handelsnorm for smørbare fedtstoffer)
Butter yield (fat balance)
Massebalance (fedtregning) · handelsnorm 80-90 % fedt
Cooling raw milk
Q = m·c·ΔT · rå mælk køles til ≤ 6 °C ved modtagelse (forordning (EF) nr. 853/2004)
Dry matter in milk
Mælkens sammensætning (definitorisk sum)
Lactase dosing (lactose-free milk)
Enzymproducentens datablad (fx Ha-Lactase 5200: 500-4.000 NLU pr. liter)
Value of a milk delivery
Mælkeproducenter.dk / Mejerimedier (afregningspris) · massefylde 1,03 kg/l
Whey quantity (mass balance)
Massebalance (bevarelse af masse)
Tank: filling time at a given flow
Forholdsregning (kapacitet/gennemstrømning)
Cheese: fat in dry matter and firmness
Codex Alimentarius general standard for cheese (CXS 283-1978)
Holder tube: length and holding time
Tetra Pak Dairy Processing Handbook, chapter 'Heat exchangers' (holding tube)
OEE on a production line
OEE (Overall Equipment Effectiveness, Nakajima/TPM) · competence objective «calculate OEE»
Evaporation and powder (dry matter balance)
Mass balance for dry matter (Tetra Pak Dairy Processing Handbook, concentration and powder) · competence objective «mass balance»
Tank and vessel
Exact flat pattern
Funnel and hopper
Exact flat pattern
Nozzle in a shell
Exact flat pattern
Dished end cap
Approximate flat pattern
Tank support — saddle, legs and skirt
Exact flat pattern
Tub with fall and drain
Exact flat pattern
Channel and trough with fall
Exact flat pattern
Two-part valve cover
Exact flat pattern
Tools that work in all subjects
Whatever your programme is called, these tools calculate the same — Pythagoras, area, percentages and units are not tied to one trade.
- Pythagorasa² + b² = c²Find the missing side, set out a right angle, check whether a room is square, and find the space diagonal.
- Area and perimeterm²Rectangle, triangle, trapezium, circle and composite shapes — area and perimeter.
- Volume and surface aream³ · lBox, cylinder, cone, sphere, pyramid, prism, pipe and frustum — also in litres.
- Percent%Percentage of, how many per cent, percentage change, discount and VAT.
- Scale and ratios1 : 50From drawing to reality, area and volume to scale, the rule of three and dividing in a ratio.
- Unit convertermm ↔ mFrom mm to km, Pa to bar and kB to GB — with the unit staircase.
- Time calculations and the clockt : minTime between two clock times, add time, and 1.75 h = 1 h 45 min for the timesheet.
- Slope and fall% · ° · 1:xFall from level to level, in per cent, per mille, degrees and mm per metre — and the height difference.
- Material consumption including wastem² + %Boards, paint, battens at c/c spacing and packs — for a composite surface or a whole room, with waste.