New PET bottles

[Bombers hoppy ending]

Hi guys. I have a new batch of PET bottles arriving tomorrow. Just wanted your thoughts on how clean they are from new. What do you guys do with new plastic bottles.
1. just sanitise with starsan and fill.
2. wash with cleaner then starsan.

My thoughts are they should be clean and only require filling.
Appreciate your thoughts.

 

[stubrewworx]

1.

 

[Stevieboy]

Sanitise and fill.

 

[phildo79]

If you have a dishwasher, put one in with a normal load and see if it comes out without warping. If so, bung the rest in. I wouldn't trust them to be spotlessly clean. I rinsed mine out originally with about 60 degree water from my hot tap and then used starsan.

 

[Bombers hoppy ending]

Thanks for the reply’s guys.
bottles arrived this afternoon so will be bottling tomorrow morning.
Then the next batch of beer on in the afternoon.

 

[DavidDetroit]

The heating cycle on the dishwasher was what spawned new bottles, wasn't it?
I tried to find the care instructions for PET beer bottles, came up empty.

 

[phildo79]

The heating cycle on the dishwasher was what spawned new bottles, wasn't it?
I tried to find the care instructions for PET beer bottles, came up empty.

Couldn't say. Do you mean it encouraged people to buy new bottles?

 

[Ale House Rock]

I just sanitise them and use as normal - never had an issue.

 

[DavidDetroit]

Do you mean it encouraged people to buy new bottles?

No, just asking the OP a question. I'm pretty sure the same member (not positive) washed his previous batch in the dishwasher.

 

[phildo79]

Ah right. I would go for under 40 degrees C, if possible.

 

[DavidDetroit]

Ah right. I would go for under 40 degrees C, if possible.

That's what I was looking for specifically on the Internet. I really was intent on finding the specifications from the manufacturers but came up with nothing, data that would behoove them to make widely available.

 

[phildo79]

What are the properties of Polyethylene terephthalate?

Property	Value
Technical Name	Polyethylene terephthalate (PET or PETE)
Chemical Formula	(C10H8O4)n
Melt Temperature	500°F (260°C)
Typical Injection Mold Temperature	74 - 91 °C (165 - 195 °F) ***
Heat Deflection Temperature (HDT)	70 °C (158 °F) at 0.46 MPa (66 PSI) **
Tensile Strength	152 MPa (22000 PSI) *** W/ 30% Glass Fiber
Flexural Strength	221 MPa (32000 PSI) *** W/ 30% Glass Fiber
Specific Gravity	1.56
Shrink Rate	0.1 - 0.3 % (.001 - .003 in/in) ***

 

[phildo79]

Should be able to withstand just below 70 Degrees C, if I am reading that correctly.

 

[phildo79]

I think my dishwasher runs its current cycle at 60 degrees. Might fire one in tonight and see what happens.

 

[DavidDetroit]

Should be able to withstand just below 70 Degrees C, if I am reading that correctly.

Great chart, a little over my head. That's good to know.

 

[Slid]

I have a vague recollection that 40C is the limit due to the anti-oxi lamination or something.
Anyway. I have a number of cases of Coopers bottles, that have been used many times with few issues, and would never put one in a dishwasher.
From new, spray of Starsan or equivalent, and off you go!

You rinse well after emptying the beery contents, then add some cleaner steriliser solution and leave until bottling day.
Then repeat the rinsing and give a swirl with a bottle brush, drain, transfer Starsan from bottle to bottle and drain again, they are ready to prime and go.

A bit of a faff, but a bottle tree and a practised routine mean it can all be done without really thinking.

 

[starseeker]

I can't imagine that Bomber is too keen on wrecking his new batch of bottles after what happened to his last batch in the dishwasher :)

 

[phildo79]

Pray tell, what happened?

 

[Bombers hoppy ending]

No, just asking the OP a question. I'm pretty sure the same member (not positive) washed his previous batch in the dishwasher.

Nope only did it the once with the PET bottles. I have washed my glass bottles in the dishwasher.
New bottles now filled and conditioning.
I got the original PET bottles second hand with my first lot of fermentation gear. They were already a little battered. If only used them for the wife’s cider as it makes it easier for her to know what’s cider. I used the odd one for a beer to determine the carb conditioning, as you can feel the pressure increase.
Not that fussed to replace them, just awkward timing.
Anyway all good now. Just wanted to pass on the mistake so that others might not make the same error.

 

[DavidDetroit]

Nope only did it the once with the PET bottles. I have washed my glass bottles in the dishwasher.
New bottles now filled and conditioning.

Your post must have coincided with someone's who washed his PETs in the dishwasher and then put up a warning not to do that. Was a few days ago.
Almost nothing better than conditioning beer.
Thanks.
Edit: Just checked upthread and now I'm confused.