LoopStringLoopString

Dairy Processing Monitoring & Compliance

Continuous time + temperature logging from raw-milk reception through HTST, vat pasteurization, fermented incubation, and cold-chain storage — with PMO and FSMA-grade PDF compliance reports out of the box.

Just aging cheeses? See the cheese cave aging page. Cold-storage only? See the cold storage page.

The Problem

Pasteurization records are required by law

FDA Pasteurized Milk Ordinance (PMO) and FSMA Preventive Controls require continuous time + temperature records for every HTST and vat pasteurization batch. Paper logs and spot-checks do not satisfy modern inspections.

Cold-chain breaks ruin batches and trigger recalls

A failing raw-milk silo, ice-cream hardening freezer, or finished-goods cold room is hours of damage before someone walks past. Continuous-monitoring on every cooler beats hourly clipboard rounds.

No remote visibility across production + storage

Dairy processors run distinct rooms — receiving, pasteurization, fermentation/incubation, packaging, cold storage. No single picture of what is happening across the line.

Audit prep is paper archaeology

State dairy department inspections, FSMA audits, and recall investigations all need timestamped temperature records pulled fast. Filing-cabinet retrieval is hours of work; a tampered paper log is a regulatory finding.

How LoopString Solves It

Edge monitoring on every cooler + vat

On-Pi probes read raw-milk silos, balance tanks, HTST hold tubes, vat pasteurizers, yogurt incubators, ice-cream hardening freezers, and finished-goods cold rooms at sub-minute intervals — locally first, cloud second.

Production-line dashboard

See every room and every vat on one screen with sparkline trends. Group by production stage (raw → pasteurization → fermentation → cold storage) for line-of-sight from receiving to ship-out.

Threshold alerts on legal limits

Configure narrow alert windows on pasteurization hold temperature, fermentation setpoint, and cold-storage maximum. Anomaly detection catches compressor decay, heat-exchanger fouling, and probe drift before they show up in product.

PMO-grade pasteurization records + cold-chain logs

Every reading logged with a tamper-resistant timestamp. Per-batch HTST run reports, daily vat pasteurization logs, and cold-chain audit trails exportable as PDF for inspectors and recall investigators.

Built for these dairy operators

Fluid milk + HTST pasteurization

Continuous logging of 161 °F / 15 s hold tube + ambient + raw-milk silo + packaging-room cold rooms.

Yogurt + kefir + fermented dairy

Multi-vat incubation at species-specific T (42–45 °C for Lactobacillus bulgaricus + Streptococcus thermophilus); cold-chain after.

Artisan + farmhouse cheese vats

Vat pasteurization (145 °F / 30 min) + cook + cheddaring step temperatures + brine room. Pair with /use-cases/cheese-cave-aging for affinage.

Ice cream + frozen dessert

Mix ageing tanks (4 °C, 4–24 h), continuous-process freezer outlet temp, hardening tunnel (-30 °C), retail freezer storage.

Butter + cultured-butter creameries

Cream-ripening temperature + churn-room ambient + finished-product cold storage with continuous records.

Multi-site co-op + regional creameries

Multi-location grouping — every plant on one dashboard, RBAC for plant managers, single audit-ready record across facilities.

Hardware You'll Use

DS18B20

Waterproof probe for vats, hold tubes, cold rooms

1-Wire

SHT31

Ambient T + RH for packaging rooms

I²C

RTD probe + ADC

High-accuracy temperature for pasteurization compliance

Analog

Relay module

Refrigeration + agitator + valve control

GPIO
LoopString dashboard — dairy processing

On legal scope

LoopString provides continuous time + temperature monitoring, alerting, and audit-ready PDF reports. It does not replace the role of a Public Health Engineer, dairy plant field officer, or 21 CFR 1240.61 record-keeping responsibilities. Treat LoopString records as your contemporaneous logs; keep the operator-attested signed summaries the PMO requires.

Ready to make every batch audit-ready?

Start free — no credit card required.