There are currently two options for companies who use palm oil / palm kernel oil or any derivatives & fractions, 1 )support or 2)use RSPO (Rountable on Sustianable Palm Oil) certified material. There are 4 approved supply chain options, 1)Segregated and 2)Identity preserved - if companies use these options they can claim they 'Use RSPO certified Palm Oil'. The other two options are 3)Mass Balance and 4)Book & Claim (Book & Claim option is operated by GreenPalm), if these options are used then the company can claim to Support the production of RSPO Certified Palm Oil.
The link document below explains what is required for each of these supply chain options, if a company is just a member of the RSPO or says its supplier is a member of the RSPO, this does not mean they are using or even supporting RSPO certified palm. A membership is a first step, also to use the Book & Claim supply chain option you don't currently have to be a member of the RSPO.
http://bit.ly/NwVJ4r - Guide to Support or Use RSPO certified sustainable palm oil
Brambel Berry's RSPO membership looks like it is currently pending approval. They are currently not a member of GreenPalm or use this RSPO supply chain option.
Soapers Work / Columbus foods, not an RSPO member, not a member of GreenPalm.