The Baby Checklist
Micro Express Plus Microwave Bottle Steriliser

NUK

Micro Express Plus Microwave Bottle Steriliser

7/10 overall

About £15

A compact microwave steriliser that sterilises up to 3 bottles in about 3 minutes, ideal for travel or small kitchens.

Reviewed by SepehrNot yet hands-on tested — based on research & published specs
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Where electric sterilisers are a permanent kitchen appliance, this NUK unit is a compact plastic tub that goes into your own microwave, sterilising a smaller load (up to 3 bottles) in around 3 minutes. It's the obvious choice for smaller kitchens without spare counter space, or as a genuinely packable option for staying away from home.

Against the electric options in this category (Tommee Tippee Steri-Express, Philips Avent 3-in-1), the trade-off is capacity and convenience versus cost and portability: this fits fewer bottles per cycle and depends on your microwave's power output for consistent results, but it's far cheaper to buy and small enough to pack in a suitcase or nappy bag for a weekend away.

For a first steriliser on a budget, or as a genuinely portable second one for travel, this is a sensible pick. For a family doing multiple sterilising cycles daily at home, an electric steriliser's larger capacity will save more hassle over time.

What we liked

  • Much cheaper than electric sterilisers
  • Compact and genuinely portable for travel
  • Fast cycle time

Where it falls short

  • Smaller capacity than electric sterilisers
  • Result depends on your microwave's wattage
  • Needs microwave access, no standalone option

Specs

Type
Microwave steam
Capacity
Up to 3 bottles
Portable
Yes, compact enough to travel with
Cycle time
Approx. 3 minutes (microwave-dependent)
Stays sterile
24 hours with lid closed

How we scored it

Sterilising Effectiveness

Cycle time and reliability of killing bacteria across a full load.

7/10

Effective but results vary slightly with microwave wattage.

Capacity

Number of bottles and accessories it fits in one cycle.

6/10

Fits only 3 bottles per cycle, smaller than electric alternatives.

Ease of Cleaning

How easy the steriliser itself is to descale and keep clean.

8/10

Small and simple to rinse out, no descaling element involved.

Weighted by importance for this category — see our editorial policy for how we test.

The alternative

Electric Steam Baby Bottle Steriliser

Tommee Tippee

Electric Steam Baby Bottle Steriliser

An electric steam steriliser that fits up to 5 bottles and kills 99.9% of germs in around 5 minutes.

8.1/10